tank mode 

to go beast on L4D in a destructive manner.

Jack Smith: Man Left 4 Dead is pretty fun!

Tyrone LaTrice Johnson: Yeah, especially when you TANK MODE them hoes.

tank mode by MrV? September 20, 2009

Tank Mode 

When in emotional pain you dont show any emotion until you are over the situation,

John: She just broke up with me dude...
Mike: Dude that sucks, I'm sorry.
John: Yeah, I'm going into Tank Mode

Tank Mode by Willrodg January 30, 2010