One year when i was around 6 years old maybe?
My grandma made the mistake of buying my brother a kiddie pool. And the day we got it there were birds shitting in it, and someone's dumbass dog jumped in it.
Then we set it up for a birthday party, and that shit turned brown-ish yellow.
Then i think earlier this year or late last year i brought this up to some of my cousins, and one of them who was there said that she thinks she remembers peeing a tiny bit in it.
(Yet we all blamed it on my brother at the time, since it's literally something he would do LMAO)