A crazy woman.

The expression is taken from the film 'Wayne's World'. Lara Flynn Boyle's character presents Wayne with a Gun Rack as a birthday present because she is crazy. Therefore all crazy bitches are now just called "Gun Racks"
That girl scratched my back up real bad then broke in to my house and stole my underwear. She's a total gun rack.
by Bunzenjane November 28, 2014
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A woman with attractive arms and breasts.
Wow, check out her gun rack!
by RFLJ May 9, 2009
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an abnormally large arsenal of weaponry complete with firearms not typically viewed as use for self defense conveniently displayed in one's house for all to see from outside the house. Thereby stating the fact that you are not to be fucked with.
Bro, have you seen your neighbor's Call of Duty Gun Rack? I would just love to see someone try an fuck with him.
by Chuck Carter October 10, 2011
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A group of male stud's with Erect Penis's. Gun-rack's can be seen in abundance in Bukkake-themed pornography. (See also Gun and Bukkake).
"Charlotte's face lit up when she saw the Gun-rack in the porn movie".
by absolutejw January 23, 2010
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