Synonyms of 'practical joke'
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A hoax is a trick in which someone tells people a lie, for example that there is a bomb somewhere when there is not, or that a picture is genuine when it is not.
His claim to have a bomb was a hoax.
I thought she was playing a joke on me at first but she wasn't.
Thesaurus for practical joke from the Collins English Thesaurus
A practical joke is a trick that is intended to embarrass someone or make them look ridiculous .