2 definitions by Noob Tuber

Not to be confused with "bro-pipe", this refers to the rifle mounted grenade launchers in warfare games (see Modern Warfare 2, Call of Duty 4, etc). These can also be called "noob tubes"- though in some cases that would be an incorrect term.

Case 1- If someone uses a grenade launcher because they cannot kill otherwise- you would be correct in the assumption that it is a "noob tube".

Case 2- If someone uses the launcher because he/she is bored of the guns, and prefers to find more inventive ways to kill people (i.e. curving the ordinance through window frames, arcing at the right angles, hearing footsteps and killing someone who is around the corner, shooting a dud at close range to hit them in the stomach so they make that satisfying "ooof" sound) then that is not a "noob tube". Case 2 is a PRO PIPE.

In case 1- the user is easy enough to counter. Wait until he/she is reloading or force them into close quarters to truly test their aim. They only have one chance to dud shot you.

In case 2- it does not matter. Guns, knives, grenades- the user would have killed you anyways. You are their play things.

Generally- people have to have something to whine about on Xbox Live, PSN, or PC. Noob tube can be considered a derogatory term to those skilled enough to know the difference between cheesing out the grenade launcher and appreciating it's useful (yet slightly different from a gun) ballistic tendencies.
"That level 1 had trouble hitting anybody- now he has a few kills because of the grenade launcher- I mean noob tube"

"Wow. That guy is really tough to beat. He just went 29 and 1 on terminal- there was nothing we could do to beat him- even when he ran out of grenades and only had a pistol! I can't tell you how many times he killed two or three of us at once with that PRO-PIPE"
by Noob Tuber April 2, 2010
Get the pro-pipe mug.
B Up A. Refers to Modern Warfare (MW2, COD4, World at War). It means to "give up" or "tap out" and back out of the lobby before the game starts. You can tell someone to "Bupa" (sounds like "Boopa") if you want them to leave.
Example 1:"Man, you guys have no skill- you keep using your noob tubes". "Noob tubes? These are pro pipes. B UP A"

Example 2: "I don't noob tube, I bro-pipe!"
by Noob Tuber March 31, 2010
Get the B up A mug.