a pathetic man gets excited by his sister's defenseless appearance! he can't help but masturbate using her as inspiration, even though he knows it's wrong. but she catches him and the atmosphere becomes awkward! "men have to release when they're backed up, right? i'll help you," she says, offering handjobs and blowjobs. but he still can't cum, so she says, "i can't let you insert it, but rubbing is okay!"
