Stick your penis in the sleeping sister's pussy

You push the girl's shirt up enough to expose the skimpy pair of bikini panties barely concealing her treasure. You hook a finger through them and slide them down her legs, leaving her juicy slit exposed.
You shuck your pants and climb on top of her. Your young stiffie easily slides inside her. She wakes up with a start, but you're already completely encased in her twat.
"Brandon, what the fuck!" she exclaims, putting her hands against you and shoving.
"Fuck is right," you say while effortlessly ignoring her pushes. "Now keep it quiet. You don't want Mom to hear us, do you?"
"Get off me!" she hisses.