Pee on Earth Day is an annual holiday designed to remind us that we are an integral part of the water cycle. Pee on Earth Day is celebrated on the first day of summer (June 21 for the northern hemisphere), since it is likely to be warmest then, and we don’t want to freeze any delicate bits.
I just celebrated Pee on Earth Day. It is somewhat challenging to do so in an urban setting. Let’s just say I waited until dark, and now there is a very happy plum tree.