Back in my college days, I was a regular at the local art house cinema, which showed animation festivals several times a year. One year they had this one, called "The Billy Nayer Show" in the program.
I was the one laughing through the length of the closing credits. I don't know if it was the randomness of the lyrics, or the last few lines' revelation, but this just killed me.
Also, the style of animation's pretty cool.