look up any word, like smh:
 
1.
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.
by MrV? September 20, 2009
 
2.
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
by Willrodg January 30, 2010