1) a kind of riddle using a play on words, e.g. 'When is a door not a door?' - 'When it's ajar.' (conundrum)
2) (also called 'a play on words') a humorous use of words which sound the same or of two meanings of the same word, e.g. 'The soldier laid down his arms' (pun)
(an example of) a form of drama dealing with everyday life in a humorous way and with a happy ending
funny entertainment