See YouTube Poop. A YTPMV is a music video featuring various clips from tv shows, movies, commercials, etc. repeated or sped up/slowed down to fit to a beat, usually techno.
Popular clips used in YTPMV's include the Mario and Zelda Cdi games, the Super Mario World tv show, and many more.
YTPMV: Ganon Hates Grating Cheese:
"Mah boi, mah boi, mah boi,
this dinner is what all true warriors strive for!
I wonder what's for dinner,
You get the point