Multiple characters peeing in the same place, at the same time, and at the same "rank". It is acceptable to have the characters peeing on each other, but it can't be one sided such as one character peeing on the other while the other pees on the ground. For example these two are peeing on each other simultaneously.

post #2404121

But here red is peeing on gray and gray is peeing on the ground.

post #3783247

It can also be multiple characters peeing collaboratively on another, as the collaborative peers are acting together.

post #1271560