that usually ends up with a follow through or if your really, really unfortunate, your ass turns inside out
Tina: "Oh Johnny, give it to me hard!"
Johhny: "Uh uh, yeah, keep it coming..."
Tina: "Ahhh fuck, my ass just erupted!"
Johnny: "Shit, I got your ass all over me!"
Tina: "God those Anal Eruptions ROCK!"