A stupid creature from the game Serious Sam. It just runs at you. You shoot it, it gets back up, and keeps running straight at you.
Can be used as an insult towards a similarily stupid person.
A small suburban neighborhood in Boulder, Colorado. In Gunbarrel is the Boulder Country Club. Filled with rich, hilarious, Boulder hippies. Also home to many elderly couples and very young families.
Dude I went to Gunbarrel today and totally pissed off the rich country club members!