Pee Plating
when you pee in a shallow plate, freeze it, and slip the pee-disc under somebody's door in the middle of the night so that by the time they wake there is a pee puddle that they can't explain
When Jane awoke in the morning and went to get the paper she stepped in a wet spot and realized she had been a victim of Pee Plating
pee plate
A "plate" of pee made by pissing on a dish and freezing it. Once frozen, the plate can be slid under the door of an unsuspecting victim, where it thaws into a puddle on their floor or a stain on their carpet.
When Tom blocked up Mike's door with snow, Mike knew there could only be one form of revenge: a pizza-sized pee plate.