Deng-deng, deng-deng. The train rushed over the rails with the familiar sound of wheels crossing the junctions between the metal beams.

Various thick popcorn clouds drifted lazily in the sky on an otherwise sunny day. The rays of the sun heated up the train cabin, but the open window allowed a comfortable breeze to enter. Outside, the landscape changed between hills with tall pines and lush grasslands with cows and the occasional farm. Several cows looked at the passing train with as much interest as a cow could muster enjoying their grassy meal.

“It’s hot,” Beth said, while fanning her face with a tourist folder of Bern in Switzerland.

“It sure is,” Andrew sighed, as he sank back into the couch.

The teenager admired his mother. She wore a knee-high yellow summer dress that complimented her slim figure and accentuated her blonde hair and light-brown eyes. The dress allowed him to see a bit of cleavage, but not much. Judging the dents in the dress on her chest, he guessed she went braless today.

Another sigh left his lips as he looked around. They had the cabin to themselves, even if it offered enough space to four other people. It was not easy for a fifteen year old to sit still with little to do. He had forgotten to recharge his phone, but even if he had, he could not have made use of his mobile data since they had crossed the Swiss border an hour ago.

The conductor had broken the monotone several minutes earlier, but having your tickets checked hardly proved exciting.

Andrew looked at his mother again. She was quite a looker at thirty-nine. Her breasts were a nice handful; her waist was slim, and her hips flared into a nice hourglass figure.

“What?” Beth asked, giving him a curious look. “Checking out your old Mom?”

“Eh-, nothing,” Andrew said, as a blush spread over his face.

He quickly averted his attention again to the landscape outside.

He felt her knee softly bumping into his. His head shot up and looked her in the eyes, raising his eyebrows questioningly.

“It’s okay if you want to watch,” Beth smiled. “It’s kind of flattering really.”

“Oh,” Andrew said, turning his attention back to her body.

His eyes glided down her hips to her legs, which were firm from her workouts. Even her feet with their manicured toes looked pretty in the sandals.

“It’s hot,” Beth said again, although she had stopped fanning herself.

“It sure is,” Andrew repeated, this time his eyes resting on his mother’s chest.

Ignoring her son’s lewd comment, she asked, “Are you looking forward to our city trip to Bern? It’ll be good to spend some time together.”

“Yeah, I think it’ll be fun,” Andrew said, trying to sound interested.

“What’s wrong? I thought you wanted this?”

“Well, yeah, I do but-...”

“But what?” Beth asked, a frown forming on her forehead. “It’s not exactly a cheap trip, if you didn’t want to go, I’d have appreciated if you had said so earlier. We could have stayed in Stuttgart.”

“Oh, no, it’s not that! I mean, I love spending time with you,” Andrew said, looking his mother in the eyes once more. “It’s just that...”

“Out with it,” Beth ordered.

“Well, we’re going to share a room, right? I know it’s two beds, but I-, I have certain habits...”

“You mean habits like jacking off three times a day and unloading in your socks or towels?”

Andrew froze as his head flushed a deep shade of red.

“You honestly think I didn’t know? Who do you think does all your laundry?”

“I-, ah-, ehm, I didn’t think of it like that...” Andrew said, with a small voice.

“It’s nothing to be ashamed of. I was a teenager too at some point,” Beth stated, turning her attention to a small village in the distance.

“I remember how I fingered myself at least twice day when I was your age,” Beth said after a minute, turning her attention back to her son. “I was a really horny one.”

“M-o-o-o-m!” Andrew exclaimed.

“What? It’s just the two of us here, it’s not like anybody else can hear us. Did your father have the birds and bees talk with you several years ago?”

“Well, yeah, but he never talked about jacking off or how often he did it.”

“Figures, I guess you got your sex drive from me then. Frank was never any good in bed anyway, I’m glad I divorced him.”

“He’s not that bad, he’s just really busy with work.”

“Yes, so busy that it killed whatever sex drive he still had. I would have suspected him cheating with his secretary, but I know that Angela is fifty-five years old, happily married, and overweight.”

The woman stood up and locked the door of their cabin, closing the curtains. Outside, the sun had started to set, casting long shadows of the hills over the landscape.

“Alright, out with it. I know you didn’t have time to masturbate this morning, so you might as well get it out of the way now, before your balls explode.”

“M-o-o-o-m!” Andrew cried, this time in shock, “You’re not supposed to say stuff like that!”

“Well obviously it’s souring your mood. I want a fun trip with you. It’s the first time in a year that we’re doing a city trip.”

“What if somebody walks in?”

“I locked the door, at worst they’ll hear you moan, so you’ll just have to be quiet,” Beth said, giving her son a wink.

“Oh god,” Andrew groaned, the thought of getting caught embarrassing him even more.

“Maybe you need a little motivation?” She asked, with a honey sweet voice.

With a single finger, she flicked the left shoulder strap of her sundress away, leaving her shoulder bare.

“Come on, out with it,” she said once again.

Andrew gulped. His hand slowly went to his crotch where he rubbed his hardening dick through his jeans.

A small smile formed on Beth’s lips as she flicked the other strap away as well, leaving both straps hang on her biceps. Her dress dropped an inch, showing a lot more cleavage although still hiding her areolae.

“Do you need more motivation?” she asked, as she put her leg on the couch. The position kept her panties hidden, although it showed him much of her inner thigh.

Andrew gulped again, this time with more difficulty. He could tell that his mother was excited; her nipples poked the fabric of her dress. Slowly, but surely, he opened the zipper of his jeans.

“Is it really okay?” he asked, with a tentative voice, still wondering if he was going to get into trouble.

“Would I do this if it wasn’t?” Beth asked, lowering her sundress and showing him her perfect breasts.

“Oh, god, Mom,” Andrew groaned; now quickly taking his hard cock out before it got too uncomfortable inside his pants.

“You sound as if you never saw a pair of tits before.”

“I-, I haven’t,” he admitted, while still wondering how he ended up in this surreal situation. “Well, online, but not in real life.”

“You better take a good look then, I’m not going to be flaunting them again,” Beth said, while her musky scent spread in the small cabin.

“Should-, shouldn’t you play with yourself?” Andrew asked, noticing her lust. “You-, you look like you’re very horny too.”

“I am,” Beth smiled, “but it wouldn’t be proper.”

“And this is?” Andrew asked incredulously, while staring at his mother’s breasts.

Andrew could see that doubt seeped into Beth’s mind. “Come on, Mom, can’t you take your dress off completely?”