theatre sports
n.pl.— «If the interview was any indication,one can expect Actorlympics TV to be one awesomely funny show. Based on what is known as “theatre sports,” the show features a group of actors playing games for which they have to make everything up—the scenarios, jokes, characters, storylines and even songs—on the spot.» —“Bring on the funnies” by Michael Cheang Malaysia Star Jan. 4, 2008. (source: Double-Tongued Dictionary)