I have come up with the following jackass prank of my own!
(inspired by the sucker punch from one of your previous movies)
The general idea is to build a ramp leading towards some water, this can be a lake or something else. But make sure there is still some land/sand left under it to place a poo pool. Because above it, there will be a trapdoor. Now here comes the fun part, you get the unlucky sob to stand on the trapdoor under the illusion that, if they pull the rope, the mechanism underneath the ramp will start pulling it in, thus propelling them forward over the ramp into the water. But in reality, they will be pulling the trapdoor open that will cause them to fall into a bath/pool containing poo (can be anything really, but liquid poo is in my opinion the most disgusting one for this).
I have made some drawings on how it can be done and what it can look like, if you like the idea. Unfortunately, as I do not own a working scanner and my desire to post it now in the mix with not knowing any scanner around my town. There are no pictures involved at this time.
If you don't like it, I've included an appropriate picture for that.
Thanks for reading!