look up any word, like bukkake:
using your middle finger and thumb to make a gun that is the most powerful insult ever. the next step up from the middle finger.
Danielle: You're a bitch! I want to kik your ass!

Mandy: What the fuck! Don't make me pull out the "fuck you gun"!!

Danielle: Oh shit, okay I'm sorry.
by lampfucker November 17, 2010