You tell your lesbian sister that she can't possibly know she is gay if she hasn't experienced a guys cock inside of her. She tells you to fuck off and the thought of fucking a man turns her stomach and doesn't interest her in the slightest... in an effort to silence you once and for all, she agrees to fuck you, helping prove she definitely will NOT enjoy it... turns out she actually loves the feel of her brothers dick inside of her, and even asks if you will cum in her mouth because she wants to taste you so bad! She has a girlfriend, but it doesn't stop her... she even says that she is sure her girlfriend will taste your cum in her mouth when she kisses her later!