Thunder Gun

noun: the greatest action flick ever. No hesitation, never surrender, no man left behind. From the "Thunder Gun Express" episode of "Always Sunny in Philadelphia"

verb: used in a variety of ways, but mainly to denote overcoming an obstacle, to win, or be triumphant.

V. When two or more persons are together, one person preforms a "Butt Chug" and the other party lowers him/herself to receive the alcoholic rectal discharge orally. Before preforming the "Thunder Gun" one person must proclaim "THUNDER GUN!!!!" very loudly to find a willing participant and the first person to scream " AAAAYOOOO" will be the honored recipient of said Thunder Gun

Best gun on nazi zombies. Kills a large amount of zombies at 1 time. Is a 1 shot kill for the whole entire game. (and to other idiots that say that it ends up being a 2 shot kill, get a rape train started, get at close range. Its a 1 shot at 15ft down) If you want to get to round 30+, use this gun.

Thunder Gun Express is the most badass action/romance movie from "It's Always Sunny in Philadelphia"....and it has dong.

Thunder Gunned means "without hesitation" and badass. Doing anything that would be considered bold and brave would be Thunder Gunning and make you cool.
Thunder Gun, the main character, is supposed to have a nice dong in the movie.

A bb gun that shoots as fast as lightning, and sounds like thunder.