Define Wiseacres Meaning

why are those kids laying down in the hall way?
oh those wiseacres are getting shwasted again and posing for pics. its kinda awkward.

Richie has the reputation for being a wiseacre.

That Emmet Wickersham is a real wiseacre, I tell you. I caught him stealing checkers off the board while I was looking at Lawrence Welk on the television set." "If he tries that just one more time, I'm calling the nurse."