Top gun 

Having sex while airborne.
Usually in an airplane, a freefall or jumping from a cliff while having intercourse (rare).

Yoni: Check out that hot stewardess!
Gilad: Yeah, I'm going top gun in a few seconds.
---
Eyal: I had an interesting experience yesterday.
Boris: Oh yeah, what?
Eyal: On my flight over here I pulled a top gun on the chick from the seat next to me.
Boris: Elite.

Top gun by Asaf December 28, 2005

Girl you dangerous like a gun 

A Jamaican meaning for a girl who has aids

"Youre such a whore, girl you dangerous like a gun"

Girl you dangerous like a gun by Babyballxxxxx May 26, 2014

21 Gun Salute 

When a girl runs through a gauntlet of 20 guys trying to cum on her, only to get it up her nose by the last guy who is standing at the end of the gauntlet.

I saw Mary the other day, she had a shirt that said 'I Survived the 21 Gun Salute.'

21 Gun Salute by Marty McSandyselfson May 25, 2006

Machine Gun Kelly Fan

A white teenage girl who only listens to Machine Gun Kelly because they think he is "cute". Not one rapper would ever be a MGK fan.

Those girls at Starbucks are definitely Machine Gun Kelly fans.

Machine Gun Kelly Fan by wowwowwowwowwoooow September 21, 2019

eat a gun up 

To suck a dick, poss. origin: United States Federal Prison system

yo, that nigga ate a gun up

eat a gun up by B Diddy April 23, 2005

water gun

Any type of syringe used to inject drugs intravenously.

We locked ourselves in the bathroom and squirted each other with my water gun then i grudged her ass for like eight hours.

water gun by The Water Gun Tweaker December 26, 2005

smoking gun 

Delivering a payload on your partner's chest, then wiping the tip on his or her face.

It was a lousy blowjob, so I capped it off with a smoking gun.

smoking gun by 'lil stinker March 7, 2004