gun up 

To be willing to go to the ultimate defense of freedom, an armed defense of the people against a tyrannical government or any other threat, "gun up" still yet means to be prepared in all events to help and sustain the people, specifically that of the American people.

Gun up to protect freedom.

gun up by Liberty not tyranny March 8, 2017

gun up 

To take up a firearm against a political candidate or position you disagree with. Coined by the media in response to perceived violent rhetoric in the 2010 election campaigns. A variant on Senate candidate Sharron Angle's assertion during a debate that her opponent, incumbent senator Harry Reid, needed to "man up."

"Sure, the Republican­s use homophobia to "gun up" thier base but it's not working very well any more, the noticeable exception being old people." - David Brock, CEO of Media Matters of America, on Hardball with Chris Matthews, January 12, 2011

gun up by The Mind of Matt January 16, 2011

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

Top Gun Thumbs Up

A Top gun Thumbs up is similar to a regular thumbs up, only its held for much longer and you turn your hand to the side so the person youre giving the thumbs up to, can see the back of your hand.
its called a "Top Gun Thumbs Up" because during the entire film, that is all Tom Cruise and Val Kilmer ever did, never giving proper thumbs up to each other and at times, it seems as though their right hands are permenantly STUCK in that position.

not really possible to do an example of a Top Gun Thumbs Up... just watch Top Gun!

Top Gun Thumbs Up by The J. September 12, 2005

Gun it up

To gun it up is to proper hard task or to complete a job with efficiency of gunning extra power. Or to bodge like a dog with the sillicon gun. Also death by gun it up due to hermetically sealing humans into a non british standard room.

Don't worry Billy Cob face, Bunce'll be here in a minute, and you know he loves to Gun it up

Gun it up by Poohnut Flavour yoghurt January 24, 2011

Gun Mettle Update 

A well balanced combination of the Valve FPS game: Counter Strike: Global Offensive's weapon case system and skins system, and the weapons of the Valve FPS game: Team Foretess 2. This update to the game has been thought to try to help Team Fortress's trading appeal to some Counter Strike: Global Offensive traders. Adding 3 new maps and finishing a promised one (the snowplow was a lie!) Snowplow, Borneo, Powerhouse, and Suijun this gave Team Fortress 2 players a little something to chew on.

*random steam guy with #TF:GO at end of name*: "It's time to test my Gun Mettle in this new Gun Mettle update."

*another random guy*: "Wow this really made up for the E.T.O.L update!"

Gun Mettle Update by thatoldguyoverthere August 24, 2015