palooka

noun

1. (US, slang)A stupid, oafish or clumsy person.

   “What’s more, Friends offers someone for everyone: a tall, dorky, insecure guy (David Schwimmer); a ditzy, guitar-strumming blonde (Lisa Kudrow); a handsome, jean-clad palooka (Matt LeBlanc); a sarcastic, 9-to-5-ing funnyman ([Matthew] Perry); a dark-haired, blue-eyed Veronica (Courteney Cox); and a spoiled suburban princess just finding her legs ([Jennifer] Aniston).”

2. (US)Someone incompetent or untalented.

   “But [Jack] Dempsey against some palooka who had been press agented into greatness and into the form of a Dempsey menace — that would pack any outdoor arena.”

   “Butch: Lookin' at somethin', friend? Vincent: I ain't your friend, palooka.”