Responding to today's One Minute Writer prompt: Prank
Okay I only heard about this prank one time, but that was enough to change my behaviour for life. It's called "Flipping the hippo", and apparently, what you do is, while you are using the toilet (number two) you get a large doubled up square of toilet paper and you catch a log of poo. You fold the log up in the toilet paper like a kebab (open at one end) and place it under the seat, open end out. The next person to sit down gets their pants full of poo. I have never sat down without checking since I heard that story (from a very disreputable co-worker).