joker:
(plural: ‘jokers‘)

a professional joker
a person who likes to make or play jokes to make others laugh;
a person whose job is to make jokes and to do silly things in order to make others laugh, usually wearing bright, strange-looking clothes and heavy face make-up;
a comedian;
a person who is not serious or who should not be taken seriously;
a joke (previous entry),
Jim’s uncle is a joker; he makes everybody around him cry with laughter with his acts and jokes.
When he realised that he could make people laugh with his antics and jokes, John formed a club with other jokers, naming it the ‘Jokers’ Jokes’, and started entertaining people at birthday parties, meetings and weekend bashes, and ultimately became the best professional joker in the city.
My boss is a real joker who does not have a clue as to how to run an office and makes his staff laugh their wits out with his nonsense, behind his back, of course.
The media calls the politicians ‘jokers’ whenever they make a move towards political reforms or policy changes, predicting that the changes would be a huge failure, but when the reforms become popular and more and more people start appreciating them, the same media calls those same politicians ‘geniuses’!

a joker card in a pack of cards
