BASEketball is a 1998 American sports comedy film cowritten and directed by David Zucker and starring South Park creators Trey Parker and Matt Stone, along with Dian Bachar, Robert Vaughn, Ernest Borgnine, Yasmine Bleeth and Jenny McCarthy. The movie follows the history of the sport created by Zucker years earlier of the same name, from its invention by the lead characters as a game they could win against more athletic types, to its development as a nationwide league sport and a target of corporate sponsorship.

Coop Trey Parker and Remer Matt Stone areand unemployed. They arrive uninvited at a party hosted by a former high school classmate of theirs. After finding out that their classmates have matured, Coop and Remer find themselves outside drinking beer and shooting hoops. Two former classmates challenge them to a game. The two see that their opponents are very good at basketball, so they say they will only play a new game they picked up in the hood.Clearly making this new game up as they go, Coop originally proposes the game Horse, but changes it to basketball with baseball rules shots made from different locations count as singles, doubles, triples, and home runs, and missed shots count as outs. During the challengers first shot, Coop psyches him out to make him miss this is another rule made up on the spot. A psyche out can be anything said or done that makes the offense lose their concentration and miss their shot. Coop and Remer continue playing their new game, BASEketball, and add a third member to their team, Kenny Squeak Scolari Dian Bachar. ........

Source: Wikipedia