Since this seems to be the place for pee stories.....
My mother has an old farm way out in the country...and was away somewhere for a week. I had promised to take my son and go water her plants, harvest the garden, and generally check on things while she was away.
It's a long drive, and I was dying to pee when I got there. Grabbed the spare key from it's hiding place and.....it doesn't work. Evidently mom changed the lock when she got the new door, and forgot to change out the hidden key.
No problem...I know how to break into her house (an entirely different story

), but I really had to pee and couldn't wait.
Ran around the back of the house...no one can see me there cuz it's way out in the country. Pants down, squat, pee.......right on a snake. Not sure who was more panicked....snake fled, I jumped, and pee'd all over my shoes.
My son laughed so hard he pee'd his pants.
The car didn't smell very good on the way home.