You are at a park that is a mile from your house. You seriously have to pee really bad, and there are no public restrooms to speak of. You don't want to pull your pants down. You have no choice but to pee your pants. How do you do it?
You squat and pee hard, which leaves only a quarter-sized wet spot, but it is really obvious what you are doing
Sit cross legged in the grass and pee, leaving a teacup-sized wet spot, but you don't look suspicous at all.
Sit on the park bench and pee through the bench, hiding the evidence, but it leaves a dinner-plate sized wet spot
Sit on the swing and pee while swinging, leaving a plate-sized wet spot and a lot of evidence.
You pee going down the slide, leaving a stripe of wet on your butt and the slide
Pee while doing the monkey bars, leaving two thin wet spots down the inside of each leg. It is not obvious
Just stand up and pee your pants
Just pee while walking to look less suspicous
Go over to a pole and put your legs around it, trying to hold in the pee. You fail and the pee goes down the pole and leaves a saucer-sized wet spot in your pants.