https://www.eroprofile.com/m/videos/...-driver-weeing
I've heard terms like "teacher's bladder," "nurse's bladder," and "truck driver's bladder."
All are about occupations where people train their bladders to "hold it" because they can't always respond when their bladders send signals demanding relief.
Here's another one: "lorry driver's bladder." A lorry is another term for what we Americans call a " big rig." This video is of a young, slim female lorry driver peeing for about 90 seconds, mostly power pissing by (I would guess) pressing down on her pelvic floor muscles. I think she must have been holding at least a liter in her bladder when this video began. I know looks can be deceiving, but this young woman doesn't look like someone who would take any crap from a male lorry driver. Nor would she tolerate signals from her own bladder demanding relief when it's not convenient. Instead, she would tell her bladder to relax and allow more filling until it's convenient for her.