“Alright, time for everyone to use the bathroom,” my father used
to say on road trips. “But I don’t have to,” was the inevitable
whine from (at least) one of us kids. Dad’s reply was always the
same: “It wasn’t a question.”
My dad was focused on being as efficient as possible, of course.
Instead of stopping for just one person to pee and then getting
back on the road, it makes way more sense to have everyone pee at
each stop. That at least prevents the inevitable inefficiency
introduced ten minutes later when the next person feels nature
urging them along.