don't play aroundUsed before a noun or descriptive phrase to tell someone not to act in a certain way, often with an annoyed or scolding tone. The exact meaning depends on what follows, such as 耍花招 “play tricks” or 耍脾气 “throw a tantrum.”
CH: 别耍小聪明，认真听我说。
EN: Don't try to be clever; listen to me carefully.