Funny Comeback

During a biology class, the class is dissecting frogs. One student happens to be quite timid with regards to cutting the frog so he simply watches. Meanwhile, a "macho" kid begins to cut the frog and says "Your such a b*tch" a couple minutes later, the bully faints. The timid kid stands above the bully as he regains consciousness and says "Whose the b*tch now?"