Lucid dreams/Male/Red Handed!
From Create Your Own Story
"No, that's not the shampoo." You tell her with a grim, "Oh. Sorry, let me get one of the others then." she says as she puts it back. "I got the shampoo you need right here." You say as you start stroking your dick, "Give me your hand." "Alright." she says in a confused tone and puts out her hand. You pump faster and spray your cum in her open hand, "That your shampoo, now rub it in." She does what she is told, and begins washing her hair with your cum. "That's it, I'll give you some more." You fap even harder now, getting ready to shoot more out.
But when she turns to you again, she jumps back and yells "Holy shit!" "What?" You ask her, but she just yells "What the fuck do you think your doing, you sick fuck?!" You tilt your head a bit in confusion. No, it feels something soft and yet hard is forcing you to tilt your head and hit the ground. With a thud, you find yourself laying on the floor with the chair you was sitting on and a couch pillow. You quickly get up and see Jessica at the couch, fully dressed. "I know we're alone, but if your going to jack off, do it in the bathroom or in your room!" Looking down, you see you have your cock out, harden and holding in place.
Did... Did you really start jacking off while you was dreaming about jacking off? How the fuck could you let this happen?! You apologise to your sister as you make yourself descent again, but she sneers at you in disgust and demands you to go to bed. No computer, video games, just bed. You then say to her "And if I don't?", then tells you if you don't, then she'll tell mom what you just did.
You race yourself upstairs, run in to your bedroom and lock the door. Great... Now you have to go to bed... But, you are tried and today was not one of your best (or average) days...