verb. when someone farts but accidentally releases some spare feces, resulting in a spraying of feces along with the sound of a fart.
mel gibson fartshit on carmtan at the end of "Passion of the Jew" episode.
"dude james just fartshitted all over your toilet seat."
delicious orange cheese popcorn
Mike: "Ooh, look what they have here!"
Tom: "Yeah, fartshit."