Wow, for that stunt alone you should do it. If he gets that wasted and survives, then he should learn to never allow that to happen again. It'll be no easy task to clean the reserve. All those loose bits/chunks of hurl.
I'm just posting so I can be reminded of this thread later on. The mental picture of someone sitting on a toilet seat in reverse and shitting themselves is funny enough, but the chance of seeing photographic evidence is too much to resist.