"T-bag" reffers to the scrotum. "T-bagging" oringanally meant putting ones scrotum into someones mouth while they are asleep. The term "T-bagging" is popular from the game "Halo" and it refers to a movement that the character makes by kneeling down over the head of a dead opponent.
John: Haha! Take that t-bag!

Anthony: *mumbles* it wont be so funny when i t-bag you in your sleep.

t-bagging t-bagger
by AP365 April 10, 2011
When someone is asleep and you stick your balls in there mouth.
I T-Bagged my friend when he was the first one to fall asleep.
by YEA BOI November 30, 2007
1. When I male inserts a his scrotom into another female or males mouth without them knowing about it.
I t-bagged my friend while he was sleeping.
by I r sexy December 17, 2004
To T-bag someone is to batter them in a sexual manner...
based on actions of a character in a television show called ''Prision Break'', which if rumored to be quite the popular program in latin America
Mark:''*sobs* my mam gave me such a T-bag last night''
by playwert March 11, 2007
A brother with the name Travis that is a complete loser. That spoils or ruins an otherwise enjoyable event, esp. when in relation to ruining a drunken stooper. So there for you just want to punch him right in his nut bags.
Dude you t-bag you just threw up on the cake
by Steelers2009 September 22, 2013
The natural act of a man dipping his ball sack into either a woman's or defeated opponents mouth as if it were a Tea-bag.
Most often used in the gaming community as a victory move. After you kill an opponent you highly dislike it is not uncommon to stand over your enemies lifeless body and crouch up and down over and over in a T-bagging manner while the opponent watches from the kill cam his body being defiled. (Note: Although uncommon T-Bagging a player while in a laying position such as sniping can also be done and is extra funny for the kill cam review.) Note that T-Bagging can get you spawn killed or verbally assaulted over the microphone.
"The gamer finally killed his opponent after many spawn kills and took his revenge by T-bagging the body of his downed opponent."

"Did you see that asshole? He just T-Bagged my body! Everyone spawn kill him!"
by Saltypillow July 4, 2012
When a girl lays on her back with her mouth wide open and you drop your balls in her mouth.
You'll never believe what I did to that girl from the club last night...I tea-bagged her!!!
by Mike July 3, 2003