The guy, last year in Florida, who ate the face off a homeless guy, was high on marijuana.
I think that fellow was high on ‘bath salts’. A type of designer drug with effects similar to those of amphetamines or cocaine. Only this is significantly worse, if the news reports from last year are to be believed.
If smoking pot made you bite off people’s faces, millions of faces would have been eaten by now, along with the millions of chocolate bars.