I've seen that video w/a few different variations. When my kids started to go online they would email me stuff like that all the time thinking it was really funny until I told them that THEY ALL DID THAT ONCE. They didn't think the video was so funny after that. LOL
I was mortified the first time. but then after that, you just break out the bleach and call it a day.
One comment though about the lyrics... Kinda defeats the purpose of puttin on a kid's potty pants after they already went and done did pooped... no?