In malttukbakgi, there are two teams. Team A has one person stand up against the wall and the rest of the team have all their heads up in someone else’s butt/crotch area to form what looks like a big horse.
The description of malttukbakgi involves two teams engaging in a playful act where one member stands against a wall while the rest of the team positions their heads towards another person's buttocks or vulva, creating a horse-like formation.