I guess the Bro is always the last to know, so sorry to have to tell you this buddy, but your Sis is the best cocksucker in town! And its not just me saying that, you can ask any guy around, because shes probably sucked his dick and drained his balls of every gushing drop of cum he had. So dont look too closely at the phone numbers written on walls of public bathrooms everywhere, you might see one number youll recognize!