look up any word, like smh:
Convex curvature of the spine, making the ass stick out in a feminine way, thus creating a potbelly in the front.
Balding Curt Moyer of Susquehanna University has one hell of a swayback.
by Melons October 24, 2005
What people said I have. I never knew what it was 'til I read the first definition. Apparently it's a good thing :)
So I have a swayback...that's why it looks like my stomach and a*** stick out!
by littleblackdress35 August 12, 2008
a chick who has no ass what so ever
damn jenny i like your outfit but your {swayback] just ruined it
by Mz.GOODIE June 19, 2009