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The act of using a grenade launcher (noob-tube) in a war video game. Can be used because of its effectiveness and comedic value.
P1- Dude I went nub-tubbin in COD 4 and killed 22 people that round
P2- Ber, I watched you absolutely plunk that Nub right in the dome.
by Nub-Tubber March 25, 2010
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