|2.||sell a buick|
(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"
|1.||sell a buick|
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"