Johnny on a Pony
There are several variations of this game, sometimes referred to as Buck Buck. This is a game for two teams. One team is the “horse” while the other team are the “riders.” The horse team lines up and buries their heads in the arms of the member in front of them. After all the riders mount, the horses have to guess how many riders there are.
Another variation is that the riders’ objective is to break the horse while the horse team tries to get a rider to touch the ground without breaking their horse.
Not necessarily the safest game ever invented, but it is loads of fun.
Below is the version that the Teenage Mutant Ninja Turtles played in their most recent movie (2014):