Okay. After cleaning up the urine that involuntarily spread quickly around the frontal area of my jeans, I showed it to a bunch of other late nighters and I must say, the effect was reproduced successfully in all three of them.
This went around school a few months ago. We'd play it on the teacher's computer, which was linked to a projector (~6ft screen), and the class would huddle around and try to figure it out. I couple of them got it.