Here you are, alone with your hot little sister all weekend long. Too bad she's such a bitch. Didn't stop you from staring at her juicy ass while she chatted on the phone in her room. Sprawled out, poking it up in the air so you could see a glimpse of panties. She knew you sat in your room jerking off all day. Worst of all she knew you fantasized about HER. It was wrong, but your cock wants what it wants. And it wants her slutty mouth.