The biggest fag you will ever meet in a online match. A fag that uses a grenade launcher the whole game and always kills you on a kill streak. Usually uses danger close and a claymore; and always camps :{
Name given to players who launchs an M203 Grenade Launcher in Modern Warfare 1 and 2 because they can't get normal kills with bullets. Person who also abuses it like any other guns.
A nube tube is an under barrel mounted granade lancher use in the Call Of Duty games. They are called nube tubes because they are easy to kill with and typically only new people use them.