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1.
Primary, head, first in order of significance. Also, quintessential, pure.
As a consequence of routinely playing handball with his own turds, Randall was recognized as the chief bullgoose looney at the asylum.
by ubiq1 November 03, 2010
 
2.
The opposite of Bull Moose. A Bull Goose is when a guy is on the receiving end of a strap-on from a girl who is flapping her arms like wings.
"She Bull Goosed him right in the ass."

Bull Goose sucks.

Bull Moose is the shit.
by DBone07 October 06, 2009