Rob's best friend was a girl. Her name was Teri and they'd been best friends since they were about eight. Rob had lived in the neighborhood his whole life when Teri, her mom and sister moved in two houses away. Teri was a tomboy who could play a mean game of sand lot baseball, and was good with a racquet too. Lots of the other guys stuck up their noses at Teri because she was a girl, but Rob didn't even notice. She was good at stuff, and good company, so over the years Rob and Teri had spent most of their free time together. They rode bikes together, explored the woods together, played tennis, chess and baseball together. And they read together. Both loved to read and they'd read anything. Fiction, non fiction, it didn't matter.

There was a huge Sycamore tree in Rob's front yard. It was sixty feet tall, with lots of long evenly spaced branches - perfect for building a tree house, so, when they were both 12 years old they set about doing just that. The first one was just a platform about fifteen feet off the ground. It was big enough sit on and you could see the street through the branches. That's where they sat and talked, or dreamed, and spent time together. They built two more platforms another fifteen feet up, and ten or so feet apart. Each was just big enough for one person to lie on, with a place to put something to eat and drink. These were the reading platforms, for when they wanted to be alone with a good book. Most summer days were spent in the tree, if they weren't swimming or doing other things.

When they were fifteen they built what they called the Eagle's Nest. It was another platform, almost in the top of the tree, large enough for both to lie on, and with short walls to keep them from rolling off when the wind blew.

And the wind blew indeed.

Whenever they were up there it was and exciting time. The branches swayed and leaned and sometimes the Eagles Nest moved five or six feet from side to side.

Of course, by this time, Teri was aware of boys and Rob was aware of girls. They talked about it sometimes. Teri asked things like why guys liked girl's boobs so much, and Rob asked if girls ever wondered how big a guys dick was. There wasn't much they didn't feel free to talk about.

It was in their sixteenth year that they finally noticed each other. Rob was average height, with a shock of unruly brown hair and dark eyebrows. He was broad in the shoulders, partly from swimming and climbing the tree so much. He had a good smile and gentle hands. The only thing that bothered him about his own body was his dick. It was long and dangly, looking more grown up than the rest of the guys. It embarrassed him a little, especially when it became erect. When that happened there was no way to hide it. It was just huge when that happened.

Teri had grown from a gawky girl into a ripe young woman, her breasts proudly filling the loose shirts she like to wear and her hips stretching most of her comfortable shorts tight around them. Her hair was either auburn or blond, depending on what season it was. She went blond in the summer and her hair darkened during the winter months. The feature about herself she wasn't sure she liked was her nipples. She had puffy pink areolas, which wasn't so bad, but her nipples sometimes stuck out from them so far that she couldn't hide them. Sometimes, when she thought about certain boys, those nipples of hers got hard and ached, and stuck out at least half an inch.

It started while they were climbing the tree one day to read. Rob had gone up first, with Teri right behind him. The route up the tree was well established, and both could climb it in their sleep. For that reason Teri wasn't looking at where she was putting her hands as she climbed, and just glanced up at Rob. He had on gym shorts that were loose, and as the leg gaped open she saw right up them. There, exposed to her now wide eyes was his penis. Teri had seen pictures of them before. In fact she and Rob had sneaked copies of Playboy and Playgirl up into the tree before and had gone through them together, pointing out what they liked and what was gross. So she had seen pictures of them. But she had never thought of Rob as... well... having one. Now she climbed closer, right behind him, trying to get another look. He stopped just below the reading platforms, to pull off his back pack and lay it on the boards. One leg was up and one down, and she had the perfect chance. She peered up the leg of his shorts. "Wow" she thought to herself "His looks different than the ones in the pictures." His looked... somehow... well... nicer. Not so knobby somehow. Or something. She wasn't sure just what. But it didn't gross her out. Not at all. In fact she blushed as she felt her nipples start to do their thing.

Rob clambered up on the platform and leaned over to take Teri's pack from her. In the process he looked right down her halter top. It was cut pretty low, something Rob had noticed earlier. He knew Teri's breasts were pretty big. You couldn't miss that, but now one of her nipples was exposed as she climbed. "Wow" he thought to himself. "Her nipple is huge." He stared at her as she climbed higher, trying to see more of her creamy breasts. When Teri looked up at him again he had a glassy look in his eyes. He was looking at her like the boys in school looked at her. AND he was looking at the same place they looked!!

"What are YOU looking at?" she growled. She knew exactly what he was looking at, and she knew that her shame - her huge ugly nipples - had probably been seen. She was mortified.

"Ummm - What?" Rob said, shaking his head to clear it.

"Quit staring at my boobs!" she shouted.

"OH!" Now he blushed, bright red. "Ummm I'm sorry. I didn't mean to. It's just that..."

"I know, I know, they're so ugly they scared you." Teri said miserably.

"What?" said Rob, trying to figure out what she was talking about. He had been staring at her breasts, which were decidedly delicious looking, and not ugly at all.

"I know my boobs are hideous. You don't have to rub it in." she went on.

Now Rob was completely befuddled. "No they're not. They're gorgeous." His mouth snapped shut. He couldn't believe he'd said that. She was going to kill him.

"What?" Now it was Teri's turn to be confused. "Are you talking about MY tits?"

Rob was still staring down at Teri, who was still standing on a branch below him, her halter top still showing him plenty of the soft melons under discussion. "Tits is such a harsh word" he said. He couldn't believe they were in a tree talking about his best friend's breasts. "I mean it sounds so harsh. And your breasts aren't harsh. They look soft and... yummy." What was he saying? he thought to himself. He couldn't talk like that to Teri. He thought about climbing higher, to avoid her wrath, which he was quite sure would bubble to the surface any minute now.

Meanwhile Teri was in shock. Rob had said her breasts were beautiful! And that they looked... yummy!!!! She started to get mad. But then she remembered ogling his lovely penis and suddenly the word 'yummy' didn't seem like such a bad word at all.

"You stay right there mister." she yelled up as she began to climb.

"Ohhh shit, here it comes." he groaned.

Teri climbed up onto the platform and squatted. She looked at Rob, really looked at him. "He's actually a pretty good looking guy" she thought to herself. Her eyes took in his chest muscles, the lines around his eyes and mouth caused by him smiling so much. She felt a knot of warmth flare up in her abdomen. Her eyes strayed to the front of his shorts, where there was a considerable bulge. Now her nipples started up again, tightening, lengthening, getting tingly and hot. She blushed. He was just staring at her, but now it was at her face. He looked like he might jump off the platform any minute. "Lets go up to the nest" she said in a neutral voice.

"Hmmm" Rob thought to himself. "No yelling. Not yet anyway." He looked at Teri looking at him. She looked... different somehow. She was a little sunburned or something, red on her exposed neck. His eyes strayed to the front of her halter top. "Shit!" he thought "Her nipples are poking through the cloth." He looked at the rest of her. "Man... she's a babe" he thought. He felt his dick lurch. "Ohhh shit... not now." he groaned to himself.

It was then she said she wanted to go up to the nest. If he moved she'd see his boner.

"Um... OK" he said. "Go ahead and I'll follow."

"And have you staring at my butt too?" she said sternly. "I don't think so buster."

"I won't stare at your butt Teri." he began but she cut him off. "You go first and I'll follow."

Rob grabbed his backpack and put it over his boner. He stood up, keeping the backpack in front of him and went to the trunk, where he could start climbing. Then, facing the trunk, he slipped the backpack on so he'd have both hands to climb with.

"What's he doing?" Teri thought to herself as Rob put his backpack in his lap. Then he made an obvious effort to keep it in front of him as he went to the trunk. "Oh my gosh" she thought "Does he have an... no way" She craned her neck as he got to the trunk and put the backpack on normally. The front of his shorts were tented out something fierce! "He DOES. He has an ERECTION!!! AND... it's because of ME!!!" Suddenly the ball of heat in her abdomen began moving. It moved down, right toward her crotch. She felt a rush of damp between her legs and her pussy began to itch. She wanted nothing more than to rub it, like she did at night in her bed sometimes. But she couldn't do that now. She scrambled to follow Rob as he took off toward the top of the tree. She just HAD to try to get a look.

Rob tried to will his erection to go down. But it wouldn't. The sight of Teri's nipples poking through her halter top wouldn't leave his mind. He put one hand down to try to move the erection to a less visible attitude. He wished now he'd worn underwear. But all he did was get his boner all caught up in the front of the shorts. Now it was sticking straight out! He'd have to fold it upward once he got into the nest, before Teri got there.

Teri stared upward. She saw his hand come down and fiddle with the front of his shorts. Then his leg moved, the shorts gaped, and what she had been hoping to see was right there in front of her eyes. His dick was long and hard and the tip was holding the shorts away from the rest of it. The word 'yummy' crept into her mind again as she stared. She wanted to reach out and touch it. It just looked... COOL!! Now she was positively WET between her legs. She thought about the oddness of the situation. "Here's my best friend, and all I can think about is how I want to put my hand on his boner to see what it feels like!" She snorted.

"What?" rob had stopped, one leg higher than the other. She had a wonderful view of his rampant member. He was looking down at her.

"Nothing" she said. "Just climb"

When Teri got to the nest and looked over the wall, Rob was sitting on the other side, the backpack firmly in his lap again. Teri had an idea. As she climbed into the nest she made sure she was facing him. On her hands and knees she knew the halter top would sag away from her ti... OK, breasts... and then she could see what he did.

Rob was horrified. His dick was hard as ever. He knew from experience that it wouldn't go down until he jerked off, and that was definitely not an option at the moment. All he could hope was that Teri would ignore him and read. Maybe if he got his mind off her by reading his erection would fade. Then she climbed into the nest and he thought he'd die. There, exposed to his view were BOTH of her ripe soft breasts, the nipples clearly visible. He marveled again at now hard and long and... suckable... those nipples looked. He licked his lips. His dick got even harder. He groaned.

Teri was staring at Rob as a his eyes got big and a tortured sound came from his lips. She felt a tingle go from her breasts to that wet area between her legs. It was true! He thought she was sexy! "Now what?" she thought to herself.

Teri sat down on the side away from Rob. They stared at each other, neither knowing what to do. For the first time in their lives they didn't know what to say.

Teri thought. "Give me your backpack." she said.

Rob panicked. "Why?"

"I'm... um hungry." she said, straight faced.

"Don't you have food in your own backpack?" he said.

"Sure" she shot back "But we always share."

He opened the pack and stuck his hand inside. "What do you want? I'll get it for you."

Now she knew. He was covering up his boner. In one quick movement, too quick for him to defend against, she leaned forward and snatched the pack out of his hands. "I want the backpack!" she said sternly. Suddenly the pack was in HER lap. And there, for all the world to see - well, for Teri to see anyway - was a huge tent in the front of Rob's shorts.

"Well, well, well. And what do we have here?" said Teri. She pointed one long slim finger at the tent.

Rob clapped both hands over the enlarged organ. "Awwww shit Teri. I'm sorry. I didn't mean for it to happen. I mean sometimes it just happens... you know... for no reason." He was miserable, and thoroughly embarrassed.

"You're so full of shit!" Teri laughed. "First you stare at my tits - my breasts, and then you get a hardon, and then you say it's for no reason. I thought we could talk about anything."

Rob was astounded. She wasn't pissed off! Maybe there was hope after all. "Well, you know. We ARE friends, and I thought you'd be all pissed off if I got a hardon from seeing you. And why did you say your breasts were ugly anyway?"

Teri sighed. "Cause they ARE ugly, that's why. Sometimes the nipples stick out like they're mutant or something. I can't stand them."

Rob continued to be astounded. "You're crazy as a loon. They're HOT!" He blushed again. "I mean they're the best ones I've ever seen. I'd stare at them all day long if I could."

Teri felt warm all over. "Really? You're not just trying to make me feel better are you. Cause if you are I'll throw something at you."

Now Rob took his hands away from the front of his shorts. The tent was now clearly visible. He looked down at it, and then back up to his friend's eyes. "There's the evidence. Does that lie?"

Teri decided to take things a little farther. "Speaking of which... you saw mine... so to speak. Can I see yours?"