Vomiting while drunk. May involve desecration of a classic sedan's pristine leather seats, but the "buick" reference actually refers to the sound you and a sick cat make.
He got her naked in the back seat on prom night, and then all that garbage pail punch made him "shoot the buick," as they say, although it was really his dad's New Yorker.
by Axel von Auersperg December 6, 2005