n00b tube
A weapon in any game that allows for online play. This weapon will allow easy kills for new players or n00bs. The most common n00b tube is the grenade launcher. The grenades launch out of a tube therefore the phrase n00b tube is appropriate.
nerd 1: OMFG WTF he killed me!!
nerd 2: yh i saw him he was using a n00b tube
nerd 3:i hate n00bs :(