Wise guy
Meaning: someone who is always trying to seem more clever than anyone else in a way that is annoying, An obnoxious know-it-all, a person who makes sarcastic or annoying remarks, smart aleck
Example: Okay, wise guy, if you're so damned smart, you can tell everyone how it's done! The teacher was delighted that the worst wise guy in the class was moving out of town.
Example: Okay, wise guy, if you're so damned smart, you can tell everyone how it's done! The teacher was delighted that the worst wise guy in the class was moving out of town.