My BIL always asks for burnt pieces of meat at BBQ joints. He had breakfast at my house and put the toaster on the highest setting to burn his bagel. I thought it must be some vitamin or mineral deficiency that caused it, like some folks are compelled to eat clay. :D
Pica. :) People have funny preferences. Apparently, for a full year as a child I ate nothing but ketchup on white bread.
And pollute the neighborhood air? Shame on you!