fuck around
1. Fool around, engage in frivolous activity, as in Stop fucking around and get the job done, or I'm tired of fucking around-let's go home. [ Vulgar slang; 1920s]
2. fuck someone around. Cheat, treat badly or make trouble for someone, as in Stop fucking me around; I know what you're up to. [ Vulgar slang; mid-1900s]
3. Be sexually promiscuous, as in Doesn't he have a reputation for fucking around? [ Vulgar slang; c. 1930]