What is Undulate?
1.
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.
The large phallus undulated a stream of hot liquid into her eyes.
See
2.
You probably don't want to know, but it sounds like one of those words you learn in health class. Yeah.
Holy sh!t! How did that undulation end up on the wall!
We had to evacuate the pool because she undulated in it.