Ben’s chalk snapped. The nearly silent year nine classroom let out a collective sigh of relief as Ben, Mr Watt, sat down behind his desk in a hurry. I knew why. My friend Kate punched my arm as I giggled.

At the start of today’s class he had told us that today was note taking day. Nobody likes note taking day. Normally Ben is cool and we have the most awesome discussions in his class. He lets us talk about politics and religion and all sorts of stuff about the world we are growing up in. But his job is to teach us about Ancient Greece and so some days we had to cram. Today was one of those days.

Today is also the day I first wore the nipple clamps he had given me. He didn’t know that at the start of the lesson. But he sure knew it now. And that’s why he sat down so quickly. You can’t be the hot young male history teacher and stand in front of a year nine classroom with a massive erection tenting your pants. Well at least not if you want to keep your job! My nips were beginning to feel a little sore, but it was worth it.

“Alright let’s take a break,” Mr Watt said. I smirked. He started talking about the time he had visited Greece and walked up to the acropolis. Boring. When I caught his eye I slouched a little and slowly opened my legs. Enough that he got a glimpse of my panties. I wonder if he could see how wet I was.

It had been about four weeks since he left the small box on my desk and quietly said “if you dare” before moving off to see what slutty Stacy wanted. I had peeked into the box right then and had no idea what I was looking at. I knew it was something sexy, but it was a gizmo with screws and springs. After all, I had been teasing him for a few months now. He knew I was deliberately teasing. And he knew I knew that he knew.

So how did we get to the point where to avoid note taking day I pulled my thin white t-shirt tight enough that my history teacher saw I was wearing his nipple clamps. How did we get to the point where he sprung an erection, snapped the chalk and had to sit down in a hurry?

Again: Kate. She’s Kate, a troublemaker. My best friend since the grade three at Tate Street Primary School when my mum remarried and we moved to her husband’s house. The adults think she’s an angel. I don’t know how she manages to always seem so sweet and innocent. My mum absolutely adores her. Even Mr Simons the principal likes her. But she’s the devil. And I love her.

I’m Helen. I’m fifteen. I’m just over 150cm or five foot if i was in America. I just looked that up for you to save you the maths. I should be wearing a C-cup bra but these days I take it off every morning as soon as I leave the house. Kate is just a little shorter than me but she is stacked. I mean like crazy big boobs for a fifteen year old. She’s a double-D now and is proud of them but if she didn’t wear her bra it would cause a riot. My Cs are firm enough that there’s not a lot of difference if I’m wearing the dumb thing or not.

Kate got her tits first of course. She was twelve when she needed a real bra. Not a training bra but an honest to goodness over the shoulder boulder holder. Our mums took us shopping together and it was really embarrassing. Kate got fitted for a real bra and my mum got me a “training” bra. Training what? They’re not runner beans!

Anyway by the time I’m fourteen I’m wearing a real bra too. The stupid uncomfortable thing comes off as soon a I get home.

And that’s where this story really starts. We will get back to my sexy history teacher later. Every time my English teacher reads something I wrote she screeches “structure!” at me in her German accent. So I’m sorry that this is out of order.

Some time late in year eight, probably October, Kate came home with me to do our homework. We go to each other’s houses most afternoons. Mum is still at work when I get home and Geoffrey, her husband, gets home even later.

Like normal we are gossiping about the day as we walk through the door. Most likely about the boys in year twelve or whoever we think slutty Stacey is banging behind the shelter sheds at lunchtime. I reach behind my back and unsnap my bra then remove it by slipping the straps down my arms without flashing Kate. Yes, boys, we are all taught that magic trick by our mothers, our sisters or our friends.

It’s a hot day so I turn on the air conditioner as I get Kate and me some drinks. We fall on to the couch and quietly let the cool breeze blow over us for a minute as we sip the icy cold water.

“Oh my god Helen!” Kate is pointing at me. “Are you horny?” I look down and my nipples are hard. Her boobs are bigger but my nipples like to stick out. Suddenly she lurches across the couch at me and pinches a nipple. “You are!” I’m not. I wasn’t.