10 Embarrassing Things We All Did In Famous Video Games
3. Teabagging - Halo

One of the most popular gaming fads of recent years is so-called "teabagging" or "corpse humping", a means of mockery acted out by players in front of enemies they've just killed online in the Halo franchise.
Teabagging involves crouching at the head of a dead enemy and then promptly rising to your feet: repeating this motion allows it to mimic a certain sexual act of the same name, much to your own hilarity and the aggravation of your enemies.
Bungie eventually became in on the joke themselves and added extra corpse head movement when teabagging occurs in Halo 3, making the whole thing even more hilarious. However, it also has the potential to be a hugely embarrassing form of showboating if, a) anyone walks in and sees you doing it or b) you teabag long enough that another enemy combatant gets the drop on you, and then probably teabags your own corpse as well.
Sadly, though, teabagging has become so prevalent in Halo culture that it's also largely lost its sheen now: it should be employed especially for kills that are particularly impressive or humiliating, rather than a cheap or lucky shot.