Boxer shorts. (See also Gun).

The term is sometimes mistakenly used to describe a vagina.
"I can't stand up yet man, I've got a loaded weapon in my Gun-holster"

"I need to go to Primark to buy a Gun-holster"

"No you dick, that's not a Gun-holster, that's a quim"
by absolutejw January 23, 2010
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