wise guy

noun

1. One who is insolent or flippant; one who makes jokes or perpetrates pranks.

   “Her reputation for being a wise guy made her new teachers hesitant about having her in their classes.”

   “Leiter wound down a window. 'Whaddya want ter do?' asked the driver over his shoulder. 'Gimme pneumony?' 'Just that,' said Leiter, 'if it means saving us from this gas chamber.' 'Wise guy, hn?' said the driver, crashing tinnily through his gears.”

2. A knowledgeable or successful sports bettor.
3. A member of the Mafia; a mobster.
4. A hipster.
5. An Italian-American man.