This is perhaps the funniest thing I've ever seen on the internet. Do watch the whole thing too, it looks like the same prank over and over, but it isn't. The second prank is much funnier than the first prank, and the first prank is pretty funny.
I'm not sure how many of my readers have ever used a portable john, I try to avoid them myself, they always stink. I do have a personal funny porta john story though....
When I first visited Wisconsin, a friend and I were hitch hiking. The end of the trip was East Lansing, my traveling companion was a Michigan State student. The plan was to take the car ferry from Milwaukee to Luddington, which we did (it is Sooooooooooooo cold on Lake Michigan in the middle of the night). Some guy gave us a ride out of Luddington, so there we were standing by a 2 lane highway just outside of town at about 5 in the morning. Who should pull over but a guy pumping out porta johns. He was heading to Lansing too, said we'd get there about noon. So we spent the last morning of our trip riding to every little town fair, and construction site that had a porta john. He'd get out, hook up the pump, run it for about 3 minutes, and toss in a roll of toilet paper.
When was the last time you got a ride in a truck pumping out porta johns?