I believe it originated in the Jamaican Dancehall scene and then found its way to the US where it was bastardized by people who lack the required ass to carry it off such as Mylie Cyrus (at the VMA's with Robin Thicke!). THAT was just all kinds of wrong!
In the right context/place/time i don't see the problem with it. A nice curvy/full ass twerking has a life all of its own and can be a beautiful thing. Debs & Hannah are good at it and Chanelle had a fairly good motion going on.
Doesn't offend my senses in the slightest though.
