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It is when a guy puts his balls in his partners mouth. For both sexes.
Dude, I was at a party and i got so wasted that I got T-bagged.
by Natalie38_delossantos February 07, 2007
When someone jumps over you and puts their balls in your face. This can happen while you're sitting, standing, or on the floor. It's embarrassing and supposed to be funny. It can happen to anyone, people.
John: Hey! Lucy just fell, and I T-bagged her!
Damien: Oh yeah!
Lucy: You stupid douches!

Damien and John: Hahahahahahahaha!
by Keoo19 June 27, 2011