Beat Boy means Break Boy, B-Boy, or Bronx Boy.
Back in the days of original Hip Hop the original Beat Boys would dress as fly as possible, and part of the flava of a Beat Boy would be how he could do all of his moves and never get dirty.
Beat Boys would go to a jam, dance with some females, socialize, and when the right break beats came on, they'd get down, and after gettin down, they would get back to partying.
Yo' beat boy your moves are fly.
October 24, 2005