The phrase "little brats" is used to describe children who behave badly or misbehave.
Sentences with «little brats»
We haven't got the worst fans it's just these new breeds of gooners that are spoilt little brats who still haven't seen bad times in there arsenal careers. (justarsenal.com)
OR ARE ALL OF YOU JUST IMMATURE LITTLE BRATS WHO DO N'T KNOW HOW TO BEHAVE AND BE PATIENT? (animalcrossingworld.com)
The other problem, however, is more intractable: the snotty little brat factor. (slate.com)