Seducing My Sister/First BJ/The Doctor/Swimming/You

We are earlier than usual because Dad has to go somewhere after. We sit on a bench to get ready and a man comes in from the pool. He's not a teenager but he's younger than Dad and you can see his muscles. You look down to take your trainers off and when you look up, he's stripped off and is soaping himself in the shower right opposite. The two remarkable things about him were, the length of his cock and the fact that he had no hair anywhere on his body.

Dad's gone to use the toilet, so you nudge Suki so she looks at the man in the shower. Her eyes open wide when she sees his monster cock hanging down halfway to his knees. He wraps it in a soapy hand and gives it a good clean, sliding it back and forth as it gets stiff. When he notices you both watching, far from being embarrassed, he holds his stiff cock out for us to see. When Dad comes out, he turns to face the wall and it's pretty obvious that he's having a wank.

In the pool, Suki finds some other kids to play with and you and Dad swim a few lengths. When you get tired, you go up to the shallow end and watch the little kids trying to swim and just splashing around. Dad's still swimming up and down, so you offer to help Suki by supporting her as she tries to swim. This gives you a good opportunity to get your hands on her lithe young body and your cock soon begins to swell.

When Suki's had enough, another little girl asks you to help her. She is only wearing the bottom part of a bikini which means your hands are on bare skin as she doggy paddles across the pool'

"Come on kids, time we were going," Dad says. Now you have a problem, because your stiff cock is tenting out the front of your swimming shorts.

To give it time to go down, you swim a quick length before climbing out. By the time you get into the changing room, dad's gone for a shower and Suki's already standing on the bench waiting for you to help her. You can't resist putting your hands on the soft cheeks of her bum and, once again, being so close to her pussy makes your cock instantly react, and this time you deliberately let Suki see it.

“I written the phone numbers down, so if there’s a problem you can ring me first,” dad says when we get home. “I shouldn’t be more than an hour. Just don’t answer the door if anybody knocks.” This is the first time ever that we’ve been left in the house on our own. Mum made us peanut butter sandwiches for lunch, so we sit in the kitchen and eat them before going into the sitting-room and turning the TV on.

"Did you see that man in the shower," you say.

She giggles. "Will yours grow as big as that? It must be pretty weird having it dangling between your legs all the time."

You shrug. "I think that man is some kind of freak. Normal willies don't grow as big as that."

"I bet he plays with it a lot," she says.

"I don't think that makes much difference," you say, thinking that yours would be a lot bigger if it did. "I reckon it's just genetics, like some people are really tall and some short."

"Maybe she'll want to see mine," you think, hopefully.

"Mine isn't very big," you say.

She looks up up at you from where she's sitting on the floor. "Well, you're only nine," she says.

"That man in the shower. Did you see how he got stiff from looking at you getting undressed," you ask.

She giggles. "You could hardly miss it. But why would looking at me make it stiff? It happens to you too."

"It's what happens when we see a pretty girl, especially one whose naked."

"Why?"

"It's complicated. How much do you know about sex?"

She shrugs. "Not much. I know there's a lot of kissing, and people get undressed. When films get that far, they just jump to afterwards."

"Does your winkle ever get itchy, and when you rub it, does it feel nice?"

She blushes and nods. "Is that why that man was rubbing his willy? Because it made him feel good?"

"It's the same thing."

You're beginning to get a little out of your depth. It's one thing knowing that you want to do Sex with her, but the truth is you've no real idea of what to do. Just when you're thinking you might be able to get to show you her pussy, Dad gets home and you got your bedroom for a wank.

• Tuesday evening and you have some Key Stage 3 Tuition with The Doc