“Micelli’s” are Italian guys who sport tight white tee shirts with gaudy gold chains. These men also have a ton of grease in their jet-black hair, and talk and act like mobsters. These dudes aren’t your typical Italian guys, as they're dark, and look like they either had some Spanish in them, or some Negro. Term is New York/New Jersey slang and originates from the Tony Danza character from the television show “Who’s the Boss” named Tony Micelli
Donna only dates Micelli's, thought she will fuck with a brother or a Rican dude every now and then!
by Dan Neiwert(author of Gentleman of Leisure Volume One) May 28, 2006