play around
phrasal verb with play verb uk/pleɪ/ us/pleɪ/
(BE SILLY)
informal (UK also play about)乱搞，瞎闹
to behave in a silly way
Stop playing around and get on with your homework! 别瞎闹了，抓紧做你的家庭作业吧！
I wish you wouldn't play about with that - you'll break it. 我希望你不要瞎弄那个东西了——你会把它弄坏的。
(SEX)
informal disapproving (UK also play about)搞不正当性关系；（同…）乱来
If someone who is married or has a serious relationship plays around, they have sex with another person or people.
If she finds out he's been playing around with his secretary, there'll be trouble. 如果她发现他一直在和秘书乱搞的话，那就麻烦了。