noun
snot-nosed kid; brat
Derogatory term for a young, inexperienced, or immature child, often implying they are still dripping with snot. Used as an insult or in a belittling manner.
あの洟垂れ小僧がまたいたずらをした。
That snot-nosed brat pulled another prank.
洟垂れ小僧のくせに生意気だ。
You're just a snot-nosed kid, but you're so cheeky.