Unfortunately, I am not given a vector by which to reply so I'll take it on indirectly. Granted, the odds of any acetone level in the body approaching a combustion threshold approach zip. However, the phenomenon has been observed dozens to possibly hundreds of times – so something's happening here. What it is ain't exactly clear.
Conversely, something that HAS been predicted to have occurred billions of times in our galaxy alone: sentient life, has only been observed once – and the observers, by definition, cannot be objective. So which is less likely? That some chemical reaction of which we are unaware has happened multiple times, or that we exist at all on a distant peripheral arm of a galaxy in an unremarkable solar system?
When I was in school plate tectonics was a crazy idea. In many places, EVOLUTION is STILL a crazy idea along with anthropogenic climate change. I think it might be quite possible for an experienced drinker to binge on high-test to a point at which normal people would die of alcohol poisoning. It further seems possible that a few such individuals might have a genetic ability, and enough liver left, to supercharge a ketosis reaction and, at least for a moment, become volatile. Long odds? Sure. Impossible? Not proven.
So, if no one minds, I'll just keep this idea in the realm of possibilities until I am forced by a better explanation to discard it. I'll even make a prediction. The alcohol involved will be gin and the explosive mixture is quite likely a combination of several chemicals including methane, all of which get their turn at rapid oxidation, or combine to promote a vigorous oxidation in the presence of a flame.
I do appreciate the 'cunning stunts' comment. 🙂
a hui hou