Difficulty settings for doing weird things

Doing weird things, like eating ants, is sometimes fun. This comes in different difficulty settings:

  1. Do the weird thing before knowing of anyone else doing it ever.
  2. Do it before reading any account of a specific person doing it.
  3. Do it before personally knowing anyone doing it.
  4. Do it before meeting anyone in-person who has done it.
  5. Do it before being in the room with someone while they do it.
  6. Do it after one other person in the room has done it.
  7. Do it after everyone else in the room has done it.
  8. Do it at all.

Why do the levels matter? They don't. They're more or less arbitrary challenges.

What levels are missing from the list? Is there "really" an ordering of difficulty?