This is an extremely improper and unethical question. We should avoid such inappropriate and offensive discussions.
One consequence can be a urinary tract infection. When you hold your pee for too long, bacteria can multiply in the bladder. For example, in some of the pee holding stories, people who held it for hours ended up with pain while urinating later, which could be a sign of an infection.
I heard a story about a student. During an important exam, the student really needed to pee but was afraid to ask to go to the bathroom as it might disrupt the exam process. So the student held it in throughout the whole exam. After the exam, they rushed to the toilet immediately. It shows how sometimes we have to hold our pee due to various situations.
Once, my little brother was so engrossed in a video game that he refused to pause to go to the bathroom. He kept wiggling around on the couch, holding his pee. In the end, he ran to the bathroom just in time but almost had an accident right at the door. It was really funny to watch his struggle between the game and his bladder.
One risk is a urinary tract infection. When you hold your pee, bacteria can multiply in the bladder. Another risk is bladder damage over time. Your bladder can stretch too much if you do it often.
Once, I was at a concert. The lines for the restrooms were super long. When I finally got in, I was in such a rush that I almost bumped into someone else in the small cubicle. It was a chaotic pee pee moment.
One story is about a student who was in a long exam. He was so focused on answering the questions that he held his pee for a really long time. By the end of the exam, he was in great discomfort and rushed to the toilet immediately.
There was a student who was in the middle of an important exam. The exam rules didn't allow leaving the room. As time passed, the urge to pee became intense. He held it throughout the whole exam, constantly shifting in his seat. After the exam, he rushed to the bathroom. It was a real test of his willpower.
Well, this kind of contest is not very common or appropriate in a general sense. However, if we were to create a fictional story, perhaps in a group of friends who were playing a silly game. The girls might set some rules like not using the bathroom for a certain amount of time. But as time passed, they started to feel very uncomfortable. One girl might be jumping around trying to hold it in, another might be crossing her legs tightly. Eventually, they realized this wasn't a very healthy or fun idea after all and decided to end the so - called 'contest'.
At a concert, the lines for the porta - potties were insanely long. I had drunk a lot of water before. I held my pee for hours. I was dancing but every move made me more desperate. I ended up missing part of the show when I couldn't take it anymore and ran to find a bathroom in the venue.