When your fucking a chick in the ass and it packs too much air into her anatomical colo-capacity causing an atmospheric vacuum outside the stink rocket. Subsequently upon pulling out, the back pressure evacuates her larges intestine's contents and ends up atomized over half your bedroom.
"Dooooood, you landed the hott ass chick you were talking to at the party last night?"
"yeah man!"
"Fuck yeah bro, she was hot as fuck!"
"Hell yeah but i dont have the cash for all the fuckin' dry cleaning."
"Wait.. Why, was she on her on her period?"
"Nahhh, it was a being defined as the messy Jesse dude.. i gotta replace my carpet."