Buttspin, power move, a spin on the bottom or back of the pelvis.

The buttspin entered breaking in the early-to-mid 1970s.¹ Doze claims that "people were spinning on their butts" by 1975 , and the first news article on breaking, in 1981, mentions the "ass spin" . Significantly, it is perhaps the first spin done in breaking with the legs free, anticipating future innovations including the backspin—JoJo recalls, "before long, we were going from the butt to the back to the shoulder to a bridge" . Combos were developed, such as Jimmy Dee's buttspin-bellyspin-buttspin-backspin, performed at the 1981 Lincoln Center battle .

While the move remained common in the early 1980s, usually as a transition into a backspin, its use had diminished by the mid-1980s. Some breakers would later integrate short variations into footwork (e.g. Storm, Ken Swift, Gizmo, Neguin), while others (e.g. Kazuki Rock, Lussy Sky) have variations that typically involve a full rotation or more.

1. The move has existed in prior dance contexts; for example the signature move of James Berry, seen in e.g. Boarding House Blues (1948).