silly behaving 

said of small children who are engaged in a non-dangerous activity and are not misbehaving morally or otherwise, but nonetheless an engaged in an activity that is considered silly by adults.

a boy comes home, takes his pet hamster out out of its cage, and brings him out into the backyard, and puts said hamster on the grass in the yard. the hampster starts running away.

The boy's mother starts yelling : Peter you silly behaving troglodithe, bring Jerkins ( the hamster) back in immediately. I need to feed him.

Peter: okay, hang on mom, let me go find Jerkins.

silly behaving by Uncle Dimma November 7, 2012