look up any word, like eiffel tower:
 
1.
It means to throw up and comes from the sound Bu.....ick.
Usualy an admonision not to throw up at a party, "No Buicks sold on the premisis"
by Laenas October 14, 2004
 
2.
(slang) the act of regurgitating, or vomiting
"Tom is outside on the lawn, selling a buick"
"We partied so hard that Jay had to run to the bathroom to sell a buick"
by Mingo February 21, 2006