Mud-Pit Belly Flopping: Mud-pit belly flopping - the triumph of the human spirit by falling face first in a pile of mud. was a part of the 'Redneck games' (that lasted 1996-2012)
FROG JUMPING: Frog jumping is a competitive pastime for humans in which frogs are entered into competitions to jump certain distances. . .. Entering specimens of the California red-legged frog in the competition, since it is an endangered species, is illegal.
CARDBOARD DUELLING: The Cardboard Tube Fighting League (CTFL) holds events in Australia and the U.S. for kids and grown-ups. You compete in full cardboard armour with cardboard swords.
Competetive Sleeping: Competitive Napping is a New sport with the first documented occurrence of the sport being the 2010 Siesta Competition. This competition was more focused on the Spanish tradition of the Siesta, but nevertheless it provided a standard for the ways competitions operate and function. Since then, Competitive Napping has been in a lull, with competitions (if held) being undocumented. There have been rumors of competitions in New York and Japan, but the references are weak and there is no verification.
Far leaping (Fierljeppen): Fierljeppen is a favorite sport of Friesland province. It can be word by word translated as 'far-leaping'. The aim of the game is to jump over the water Fierljeppen - Wikipedia
Mayan Ball: Maya Ballgame, which is a branch of the Mesoamerican Ballgame, is a sporting event that was played throughout the Mesoamerican era by the Maya civilization. The Maya civilization was spread out throughout much of Central America. One of the common links of the Mayan culture of Mexico, Guatemala, Honduras, and Belize is the game played with a rubber ball, about which we have learned from several sources/ Maya ballgame was played with big stone courts
Of these I have played bat and trap - it's quite a popular pub sport in Kent, south-east England where there are leagues etc. Essentially it's good fun for a group of friends on a summer's evening over a few beers. The ball is placed on a see-saw and the idea is to flick the ball up with a bat which resembles a table tennis bat (usually the ball is something like a hard lacrosse type ball) and then in one motion the batter has to try and knock it through a goal around 20 metres away. The receiving side then get to roll the ball back and knock down a "trap", if they succeed they get a point, if they fail the batting side get a point. There's a variation played in Yorkshire, "Knurr and spell" where a ball is flicked up and in one movement the batter then has to then hit the ball as far as possible with a club.