I think that would explain why Markie is all screwed up. He wasn't really in
an army chemical unit, he was just their janitor, that's why he thought he
was in the army because he was a retard to begin with.

One day when he was in the armory with a mop handle up his ass and the other
end cleaning the floor behind him as he walked around, he decided to sniff
some chemicals for a high, and that's how he was exposed to nerve agent.

It also explains the mop incident.

Symtoms of nerve agent exposu Drooling, loss of bowels, nausea, vomiting,
headache, confusion, convulsions, coma, rapid pulse, pinpoint pupils...

Yep, that's Markie.

SC