practical joker
noun/ˌpræktɪkl ˈdʒəʊkə(r)/
/ˌpræktɪkl ˈdʒəʊkər/
- a person who plays tricks on people to make them look stupid and to make other people laugh
- He’s a real practical joker.
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practical joker
Definition of practical joker noun from the Oxford Advanced Learner's Dictionary