Mess around

фразовый глагол смотри значение mess about

Большой англо-русский словарь

Mess around

intransitive verb 1. to waste time; dawdle, idle 2. a. associate Example: don't mess around with admirals much — K. M. Dodson b. flirt, philander Example: caught him messing around with my wife

Merriam-Webster's Collegiate Dictionary