G.U.N. Truck 

A heartless, automative beast developed by the Guardian Units of Nations, or G.U.N., military branch. It is commonly found recklessly wreaking ungodly havok upon the sloped streets of San Francisco. It careens through the streets going on a relentless killing spree, destroying millions in public property in the process. It is three-stories-tall, two-lanes-wide, and is capable of making impossible 90 degree turns at inconceivable speeds.

It's sole purpose is to chase down and deflate the world-famous Sonic the Hedgehog, who was wrongly accused of museum theft commited by a similar, but unrelated, hedgehog at the time.

The G.U.N. Truck would eventually crash into an inconvenient bridge and begin it's redevelopment process. After economic woes and an intense room in court, the G.U.N. Federation rebuilt the same truck that got themselves in trouble in the first place with fancy new features like bussaw arms and rockets that allow sideways driving alongside buildings.

Guy 1: "My car! Oh my god, what the HELL happened to my car?!"

Guy 2: "Didn't you hear? G.U.N. Truck came by and thrashed it."

Guy 1: "Why the hell would it do that?"

Guy 2: "It was trying to flatten a woodland creature."

Guy 1:"..."

G.U.N. Truck by Codybean1 October 27, 2011

Truck Gun 

A firearm one carries in their truck or car. Usually a gun of low quality and/or price so that one does not loose a significant amount of money if it is stolen, damaged in an accident or confiscated by police after using it on a carjacker.

I was nervous about driving through the ghetto, but my truck gun provided me with security.

Truck Gun by Autistic Cracker March 5, 2017