B-Boys.

From the Oxford English Dictionary:

Brit. / bib/, U.S. /bib/ Also with lower-case initial(s). [Origin uncertain; prob. < b- (in BREAK n. (cf. slightly later break-dancing s.v. BREAK- II) or in BEAT n.¹) + BOY n.¹ Perh. cf. earlier B-GIRL n.

The term is sometimes attributed to the Jamaican-born U.S. disc jockey ‘Kool Herc’ (Clive Campbell, b. 1955), whose technique of prolonging the instrumental breaks in records by mixing back and forth between two copies on twin turntables is said to have given rise to break-dancing in the late 1970s.]

Originally: a male break-dancer. Now more generally: a young man involved with hip-hop culture. Freq. attrib.

Thank you OED. Sometimes pictures speak louder than words.

And other times, music speaks louder than pictures (check out this tune on SoKT).