Wait really? I would like to have an argument with a nurse fifteen years ago about this what do I need to know

She was mad at me for not peeing. I kept telling her I didn’t need to and I’ll pee when I damn well want to. She thought threatening me with catheters (standard practice) would work, but it didn’t, so they then threatened me with an ultrasound. That was fun but they found out my bladder was empty. Fuckers. I can’t pee nonexistent urine.