live action goatse to circus music.
clownsong=goatse plus sound. both music and pain.
A website of a man forcing his butthole open to a size greater than a bowling ball, while very entertaining circus music is playing in the background.
Dude 1: "Yo Zach I just had the biggest crap! My anus was like Clownsong!"
Dude 2: "That crap must have been huge!"