http://www.youtube.com/watch?v=KJ-l6l3K6ck&feature=related
I think it would have gone better if he'd kept his mouth shut.
My good god that's old! Or do they re-use prank ideas? I remember watching that when I was young enough to still think Jackass was funny!
I don't believe for a second that the tank in that portaloo contained any human waste.