Number of Words was a game played on both the British and American editions of Whose Line.
The game involved all four performers, each of whom was given a character and a specific number of words. The only rule was that a player who had been given two words could not speak unless it was in sentences of two words - and so on.
As a result, the game often turned into an exercise in hyphenation and obscure synonyms as the performers tried to continue the scene with the constraint imposed on them. Some performers were markedly better than others at this - [[Steve Frost[[ being famously told by Clive Anderson that the idea was to "speak in sentences of three words, not say three words and then stop". The American version of the game tended to focus on scenes from films, at one point replaying the Luke Skywalker/Darth Vader battle in "The Empire Strikes Back" in a very stilted style.