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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
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