One who often fist fights, or is often willing to fist fight; a street fighter, often affiliated with a gang. Derived from the
slang verb "bop", which means: to punch. Strictly defined in the 1979
movie "The Warriors". Not to be mistaken with bobber.
Tommy's
mother was worried that the boppers hanging out on the street
corner would steal his new shoes.
Dallas gave Jeff a bop on the head because he kept on
talking during the movie.