Definition of “have sb on” - English Dictionary

british dictionary

“have sb on” in British English

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have sb on

UK informal US put sb on
phrasal verb with have uk strong /hæv/ /həv/ /əv/ us /hæv/ /həv/ /əv/ verb had

to persuade someone that something is true when it is not, usually as a joke:

That's your new car? You're having me on!

(Definition of “have sb on” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)