mess around
verb- To fiddle idly. · The kids sat there messing around with leaves and blades of grass because they were bored.· These guys don't mess around! They finished the whole job in ten minutes.
- To joke, kid, or play. · Hey, don't take it personally. I was only messing around.· Don't mess around with electricity if you don't understand it.
- To have a sexual relationship, especially one which is noncommittal. · Rumor has it that he's messing around with his secretary.
- To dance.
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