Undulate

[Kit]

The uncontrollable back and forth [circular] motions made by a womans [hips] when her man has made her horny but is not there to [satisfy] her sexual cravings and NEEDS.

[Lanell]

Move or go with a smooth up-and-down motion.

[Britney]

moving from side-to-side or [back and forth]; [rocking], basically the [motion] a female does when shes riding you

[Dave Paprocki]

Verb. The act of urination.

Given because of the [oscillating] motion made by the penis upon the sucessful completion of a [piss to] [dislodge] any dewdrops.

[Lanell]

You probably dont want to know, but it sounds like [one of those] words you [learn] in [health class]. Yeah.

[Gregory]

to have a continuous up and down shape or movement, like waves on the sea: