Severely messed up, either
via temporary intoxication caused by drink or
drugs, or it can be used to describe someone's general personalty, in which context it's akin to calling someone a weirdo or
strange.
1) Shit
man. I am COOKED! Those beers by themselves weren't so bad but the weed and the pills
man they cooked me up good.
2) That dude is one of the most cooked
people I've ever known. Serious weirdo!