Most men’s underwear comes with a fly. That is a hole in the front, through which you’re apparently supposed to insert your penis while while peeing. I have never used this, and until this thread, I was completely unaware that there were people who did. I always assumed it was just some holdover from earlier times, like the way men’s shirts have the buttons on the right and women’s on the left.
So. Who uses the fly, and who undoes their belt and buttons, and then pulls the waistband down, like normal, god-fearing* Americans**?