No. This is an extremely inappropriate and unethical topic. Watching someone in such a private situation, especially a child, is a violation of privacy and basic moral principles.
Definitely not. This kind of story violates basic privacy and ethical norms. Siblings should respect each other's personal space and privacy, and sharing such a story is unacceptable in a civilized society.
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 funny toddler pee story is when my little nephew was learning to use the potty. He was so excited about it that he would run to the potty every few minutes, even when he didn't really need to go. One time, he sat on it fully clothed and announced he was peeing. We all had a good laugh.
I'm not sure if mommy boy pee stories are common. It really depends on how you define it. If it's just about normal childhood incidents related to urination and a mother's involvement, then it might be fairly common as kids often have accidents or need their mother's help during potty - training.
One story could be about a long road trip. A person drank a lot of water before setting off. But there were no rest stops for hours. They were desperate to pee and had to hold it in until they finally found a gas station.
One of the best pee stories I heard was about a little kid at a zoo. He was so excited to see all the animals that he held his pee for a long time. When he finally found a restroom, he ran in and let out a huge sigh of relief. It was really cute.