can't imagine falling asleep anywhere public, unless have not slept for 36+ hours or so, but these happens once in a few years when traveling

And even then can not imagine falling asleep not in a proper place (hotel room in this case).
I have a buddy who falls asleep at bars if he drinks too much. I can drink unlimited (which is of course limited by what the stomach says) and can not imagine falling asleep in a bar, lol. Must be different bodily functions for different people.