a derogitory term used to describe someone who is displaying acts of douchery. ; another name for a penis.
Dirk - "Did you see steve acting like he was king shit at pool last night?"

Thad - "Yeah, he scratched on the 8 ball and made a real giz pistol of himself."
by Sammy the heckler April 14, 2007
5 Words related to giz pistol

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