The OktoberfestTaunt is done by the Medic. The weapon used to do this taunt is the Kritzkrieg. This taunt has the medic crouch, and inhale from the end of his Medigun. This taunt is 4.2 seconds long and heals the medic 11 health, which when on low health and on fire or bleeding, can save your life. Oddly, in the game tips, it says the taunt heals 10 health when it actually heals 11 in-game.