Debates must be settled.
Button first. Makes it easier to zip.
button first, both closing and opening.
Button first. Reduces stress on the zipper. Nobody wants premature zipper failure.
Also just makes the zipper easier to operate in general.
Tuck in undershirt, button, buckle belt. Do things for a couple hours. Wife tells me my pants are unzipped again
Button -> Zipper
Zipper.
I leave them both open for ventilation.
I leave them open to assert dominance.
Zipper then button. Button first feels weird to me
Zip, then button
Button, then forget to zip until there’s a cold breeze
Button first, then zipper, then put on pants.
I usually button the button and immediately forget to zip the fly. Hours later after I’ve been in public all day I’ll notice that the fly is unzipped and try to zip it without anyone noticing.
So you want us to show you our arseholes while you’re showing everybody your peehole? You are a master of business.