all i could think of was this:
That one tops Top Ten Poop Movie Scenes.
However, the one your video made me think of was #4, from Van Wilder:http://www.youtube.com/watch?v=jYFD47vCMXo
What. The. Shit.
The woman this was based on was on some late-night talk show at some point. (I can't recall specifically, probably due to deep talk-show-watching shame).