Top phrases used to describe a woman's sexy walk...

[Shagger]

I can think of a few:

I hate to see her leave but I love to watch her walk away

or..

Shake it, just don't break it

or when referring to a waitress:

How about some fries to go with that shake?

Anybody got any more?

 

[RSMemphis]

Related, but different.

Description I have heard about someone's girlfriend:

She can suck-start a Harley...