Troll versus troll combat. Much like PvP that takes place in a game TvT takes place in the games forums. Can often be found on the MMO Face of Mankinds forum.
Lol kk I won't take part in this tvt.
Stands for "the Viacom team", usually meaning the monitors on the Neopets NeoBoards. A dumbass company with dumbass staff.
iloveLUPES_375892357: hey guess what tnt froze my account yesterday!!
Smart kid: There is no TNT anymore. They are now called TVT.