look up any word, like timebomb:
 
1.
The phrase spoken to a tank in a role playing game when they're terribad at tanking.

Short for learn to tank.

Can also be used in various other exaples, such as l2heal, l2shut up and l2grammar.
Man, that tank made us wipe again! Fucking l2tank nub!
by soisoisoisoisoisoi November 02, 2010