1 definition by grunnery4eva

Usually a fat male, resembling a greasy onion.

Characteristics of a grunion:
- always sweaty
- red in the face
- unpleasant to the touch
- lacks self awareness
Guy 1: Conor you're such a fucking grunion

Guy 2: Nah m8

Guy 1: Lose some weight before you hug me, man
by grunnery4eva January 24, 2014
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