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8.
A sexual act in which a man sucks a woman's vagina dry, and then spits her juices into her asshole. After this he must take her to Brown Town and jizz in her ass. Following the anal sex, the man must suck all of the juices and jizz out of the woman's ass, say "Welcome to the Gun Show" and spit the juice/jizz mixture in her face.
-Man, Gaetzy gave his bitch a gun show last night, what a sick beauty.
-Yeah bro, I guess we call him Gun Show for a reason..
by WelcomeToTheGunShow March 29, 2011
 
9.
Used to describe when your flexxxing and showing off to a girl. Or guy.
Hey check out my gun show and feel the invigoration(whip out penis and pee).
by JoshKaebisch July 06, 2006