Doom Train 

A special move on a video game called Gears of War created by xP I DoOm. It involves charging at an enemy with a shotgun and blasting the opponent into pieces.

That Doom Train was Sick

Doom Train by KINGCOOKY December 9, 2008

Multi-lane Doomtrain 

When all lanes on one side of a highway are occupied by vehicles driving next to each other in a line at the minimum speed limit so that no vehicle can pass them. Aptly named due to the ''train'' that forms in each lane. Attempted only by the brave due to the extreme anger and violence it can cause.

Someone is gonna beat that guy's ass for forming a doomtrain in the ultra-fast lane.

Multi-lane Doomtrain by Case in point April 7, 2004

Doomtrain 

1. Unstoppable. 2. Possessing great efficiency in fragging.

Applied to an individual when he is playing a video game, most likely an FPS (first-person shooter). Usually used as a noun, but can be used as an adjective or shouted by the victor of a game.

That fellow is a true Doomtrain in Halo.

Doomtrain by Matthew Schanuel October 18, 2007

doombrain 

Doombrain - someone so stupid that any decision they make in life or work, leaves a wake of rack and ruin behind them. These people are normally very short sighted and cannot metaphorically see more than one foot in front of themselves.

Wow, Gary just crashed his car because he was too busy looking out the window at a three legged dog. What a doombrain!

doombrain by Boontown July 8, 2014

Doomtrain 

The act of smashing an item with your head, typically while intoxicated.

He doomtrained that paper towel dispenser in the bathroom.

Doomtrain by AG5 September 6, 2006

Doomtrain 

A Doomtrain is an utterly leet person, and he's handsom at that :)

OMG, look at that Doomtrain, he rawks

Doomtrain by Beebo December 27, 2004