In a video game when a noob just throws grenades like crazy making a huge path of destruction. ONLY USE IN EXTREME CASES OF NOOBOSITY
by BIATCH December 11, 2004
A 'Grenoobtube' or 'Grenoob-tube' launcher comes form a blending made by myself of grenade+noob+tube as another jargon term for the grenadelauncher attachment for most weapons on call of duty modernwarfare 'cod4' and call of duty modern warfare 2 or 'cod6/ cod mod2'
by doodeyboob January 07, 2010