A sport that exercises your legs while your butt jirates up,down,side to side, and for the boss ass bitches in a circle. Warning do NOT twerk if you have no butt. It is not cute and you look like a one is those dogs trying to chase a tail that he does not have. If done correctly it will have the male sex organ erect, and may even lead to a little bit of :* (if ya know What I mean)

The pain and spasms associated when you tweek your back out while jerking off.

Art of shaking your ass

Getting your butt and shaking it

Getting your butt and shaking it

Twerk/twə k/
(verb)
informal
Gyration of one's buttocks to produce sexual arousal or laughter from audience.

An isolated, vibratory movement of the pelvic region.