Any grenade launcher, be it an M203 or a GP-30, used on a video game. Specifically online on Call of Duty: Modern Warfare or Modern Warfare 2
. It requires almost little or no skill to effectively get kills with it. Just aim in a general direction of wherever you think the enemy might be, and it'll get the job done without giving your enemy time to avoid it or retaliate.
Surprisingly, despite its name, it's not primarily used by noobs, or newcomers to the game. It's actually used more by assholes that are well into the game already but only use it to piss off their opposing team. And unfortunately, they usually do succeed in pissing off their enemy which could (and normally does) result in the enemy team changing their class to a noob tubing class while saying something like "Oh you wanna noob tube bitch? I can do it too", and that results in an entire game session being nothing but noob tubes and/or RPG's, depending on who's in the game.
Highly disliked by the majority of the gaming community. Avoid noob tubing at all costs to ensure that you don't start a tubing chain-reaction.
Teammate 1- DUDE!! This guy is using his fucking noob tube again!
Teammate 2- I swear to god. If i get tubed one more time i'm gonna bust a nut.
T1- Alright fuck this game....
T2- Come on. Don't rage quit
T2- Son of a bitch *facepalm*