Shimmy

[Magaret]

a [quick shuffle] of the lower torso (mainly [botty]) in a [humerous] and suprisingly entertaining fashion.
Also used as a description of a person, mainly camp and flamboyant

[Little_Girl]

A kind of ragtime dance in which the whole body shakes or sways.

[Gregory]

The definition of shimmy is when a woman with big enough breasts [shakes] her [torso] along with her breasts and shoulders from [side to side] causing her breasts to shake in erotic motion.The word shimmy was a word most used during the 1920s when shimmying was more popular.