noun
a person who plays tricks or pranks on others for amusement
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The practical joker in the office always finds ways to lighten the mood with harmless pranks.
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Don't take him too seriously, he's just a practical joker who loves to pull pranks on his friends.
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Watch out for that practical joker, he's always up to something sneaky.
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His wit and humor make him a practical joker in social situations, always ready with a clever comeback or joke.