A nickname given to a best friend.

Most commonly associated with the movie Wedding crashers.
Vince Vaughn knocks on the door.

Owen Wilson: Oh, babagadoosh!
by Big Bad Voodoo Daddy April 10, 2008
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Exlamatory term indicating the curvature and/or size of a chick's ass or tits; lusciousness.
"Babagadoosh!" Keih exclaimed as he drew the outline of J-Lo's ass in the air.
by jaumbie December 11, 2003
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