n.

1. 爱开玩笑的人
2. （纸牌中的）鬼牌，丑角牌，百搭

n.

1. a person who is fond of joking.
   ▸informal a foolish or inept person.
2. a playing card with the figure of a jester, used as a wild card.
3. US a clause in a bill or document affecting its operation in a way not immediately apparent.