Noun-
an anal disorder characterized by recurrent spontaneous bowel movements, or T.I.C.S. (Tremendous Involuntary Crap Spurts), accompanied by the violent expulsion of gas, leg and neck twitching, grunts, barks, or words, especially obscenities.
"Did Sarah win the Rock'em Sock'em Robots Competition against Phil?"
"No, she got a bad case of ass tourettes in the middle of the match and had to forfeit."
"Bummer, dude."
"10-4 on that, pal."
Someone that doesn't actually have tourettes syndrome, but can't help but say ass after every word,or in addition to words, modifying them, but sounding like a complete tool as a result. Nobody really says it out loud, but every hates these guys.
Tom: "Dude, fuck me in my ass! holy ass! did you see that fly-ass motherfucker doing that buttery-ass boardslide? I about shat my pants that was so bad ass. Sphincter!"
Doug: "Dude, you dumb-ass. You have ass tourettes."
Lower back tattoo. Supposed to be sexy. Often regrettably gotten, as 30 years after getting one, the art is misshapen and distorted by wrinkles and fat. Also known as "tramp stamp."
Your mother: "If you ever get an ass topper, I will disown you."