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general::
Phrase(s): fool (around) with someone or something
1. to waste time in the company of someone or a group. • Stop fooling around with those guys. They’re up to no good most of the time. • Better not fool around with part-time work. Go get a good job if you can. 2. to have dealings with or tamper with someone or something. • You had better not fool around with my little sister. • Don’t fool with that thing! 3. to challenge or threaten someone or something. • You had better not fool around with me, if you know what’s good for you. • Don’t fool with the police force!
McGrawhill's American Idioms And Phrasal Verbs