Sitting on someones face during cunninlingus or anilingus isn't Sadomasochism or Bondage! And it's not auto asphyxiation either, it's just a position.
But I do love my face being buried and suffocated in a nice ass, it is so hot. And obviously I never died yet so I obviously get enough oxygen and my brain does not become hypoxic during it LoL
And when it comes to asses, I like real asses that aren't tiny and flat and non existant

Asses are no fun when there is nothing there!