The semen that runs out of a gay man's asshole after anal intercourse.
"Butters, you are such a load of backdraft."
"We identified the 'Rainbow Rapist' after analyzing the victim's backdraft."
"Andrew, your side of the room reeks of backdraft."
Graduates of the University of Pittsburgh.
"Dude, that group of guys went to Pitt. What a bunch of failures."