Pass the time by "studying" a porno mag

Porn is the best option, you decide.

No one to hear you or walk in on you, so it's safe.

Playboy will be the one, you think, as you retreive it from under your bed.

You find your favourite page and start wanking over it. Slowly at first, but increasing in speed all the time. You get closer to coming.

You know you will cum soon.

But just then you hear the door open.

Your older sister, Jenni, is standing there, in her nighty, staring in awe at the sight of your throbbing 8 inch cock.