Never thought of it?

       I get a LOT of amusement/amazement watching Youtube Videos ref:- Flat Earth mentality.  One of their problems is the concept of "which way is UP?" in Space under zero gravity. YES. I KNOW it's NOT really  0 g.  don't bother.
      I just now got to wondering - I know Bummlies are NOT under 0 g  but may as well be; is that why "upside down" is no problem to them?