Verb - the act of slapping some unfortunate soul around the face with one's balls, hopefully resulting in an incomparable shriek of horror from the victim.
the act of putting ones nads in someone mouth while sleeping then you torture them later by calling them "Tetley Tea Bag" or "Bunky" which ever you prefer
when shane teabagged tristan, his wholesack went down to his tonsels
In multiplayer first-person shooter and similar games, to quickly alternate between crouching and standing over the body of your most recent victim, intended as a taunt, form of mockery, or expression of superiority. Represents the real-world act of the same name in which a man puts his scrotum into the mouth of another person.
Ironic in that many males who engage in this activity are somewhat homophobic (or at the very least would soundly deny any allegations that they themselves are homosexual), and their victims are typically male.
After pwning John with a skillful headshot, Bob went and teabagged him. Because nothing says "I'm a macho, red-blooded, heterosexual male" like trying to put your balls in another man's mouth...