The Best All-Time Booty Anthems

The point of music is for people to dance and have a good time. So shaking what ya mama gave us has been something we have been doing since the beginning of time. Even though I grew listening to more old school R&B, New Jack Swing, gangsta rap, hip hop whatever you wanna call it, what are the best (or even worst songs) dedicated to the female backside. It can be R&B, rap, disco, some random song you heard in the club or whatever. Help me with this list and we'll see what can come up with.