If your pants and underwear fell down in public, and everyone else was standing behind you...
...would you turn around before picking them up?
I know it's a ridiculous question, I'm drunk and will probably regret it, but it actually is a tough one when you think about it.
I guess this question is more for men than women. If you're a woman, people will see your genitalia either way.
But if you're a man, you have two options: Turn around first, but then everyone will see your penis. Or don't turn around, but then everyone will see your anus when you bend over to pick them up.