He could be a trust fund kid, or a ward of the state. That's something worth looking into, in British Columbia if you become a ward of the state (Committee of Property, as Committee of Person is very rare) the guberment manages your assets and income like trusts, inheritances, and even welfare.. If he was deemed incapable of managing his estate, that might explain the strange lack of responsibility. I don't know how one could go about ascertaining his status, though.
I guess you could just call and ask, the worst they could do is say "Fuck off, that's privileged" right? He might have his daily needs taken care of (clothing, food, shelter) from dear old daddy's estate, and be sinking more gradually because the state takes care of his basic needs, exempts his assets so he can collect welfare, and prevents him from self-immolation. Do we know if he was ever committed to a psych ward? That's usually how these things are done, but sometimes if it's a big inheritance I think the state might get involved by devious means.
The state takes a comission of such monies, so that'd hypothetically give motive. It might explain why he thinks he's kevlar, and the state is his babysitter.
EDIT: That's funny
@LilNuTTz..
Jessticles.