A: Masochist
B: Cutters AKA Emo (even thought that's not correct term)
C: Psychiatric patient
The cast of Someone to Call My Own - 2011 includes: Monica Behan
a toyaholic
T-Pain sang it but someone else wrote it.
That behavior might be classified as autochorissexual, which is a term used to describe sexual arousal or satisfaction from the idea of being oneself.
irresponsible
I would call him a god, or at least someone who believes he is a god.
We call those people "Hypocritical".
You could call them a dreamer, a fantasizer, or someone who is lost in their own world.
The term you are seeking is "home birth."
Bioluminologist .
A person who serves of his or her own free will is officially called a volunteer.
Yes, it would be possible to eat your own mouth, but the pain would probably be to much and you would have to stop before you could actually do it. Of course, there may be someone out there that could handle the pain.