Taunts are one of the six cosmetic items you can get in the game! They are a unique animation you can activate by pressing (1,2,3,4,5...) by default.
Taunts are animations you can perform to taunt opponents, as the name implies. You only have one taunt but you can buy more with mammoth coins in the Mallhalla. Taunts don't have any real in-game effect, they are just for fun and a great way to communicate since you can't chat while in-game. The usage of taunts during a fight can be described as either adhering to the tauntiquette or not.
Up to four taunts can be equipped at once, bound to the 1, 2, 3 and 4 keys on the keyboard. "Woohoo!" is available and equipped by default to all four slots, the others are available for purchase in Mallhalla.