by Vanna April 14, 2005
moving one's head, arm, or other body part (excluding sexual organs) in time to music, almost always rap.
by Rocko September 17, 2003
I was bumpin' to some half-a-dolla
by The Realest February 24, 2003
by d-mane April 16, 2008
by milly67 December 30, 2016