What is "bowling balls"

n. (plural of bowling ball English)

"Bowling Balls" is a song written by Esham and Joseph Bruce for Insane Clown Posse's 2004 album Hell's Pit, and the fourth single released by the group that was not produced by Mike E. Clark. The song's lyrics describe decapitation and murder. A short film of the same name was produced in association with the album, appearing on a special edition. Bowling Balls was the first 3-D film shot in high-definition video.