Dropping rhymes
Common term originating in New York that has spread all over the U.S. and canada to discribe making a cold rap verse usually used to discribe rap battles and freestyle. The word has evolved in different cities, in loose your self Eminem states "he's nervous but on the surface he looks common ready to drop bombs"dropping bombs is a synonym of the word dropping rhymes.
Ayy back at the club last night lil J was dropping rhymes on yo ass at free style!!! Damn that was a cold verse