Grindin, ridin or getting plowed by some mean dick. Generally used in reference to doggy or reverse cowgirl positions. Could also be viewed as: twerking while being penetrated by a penis either anal or vaginal.

When you're fucking your girl from behind and you hit it so hard her ass jiggles

Move your behind in a circular motion

a song created by the American rapper Lisa Lopane released 2019

there is also another song by lil ronnie called throw that ass in a circle

When you throw your ass in a circle.

Twerking, shaking your booty in a circle, or just shaking your booty in general. Often done in clubs or on dance floors.