1. offensive slang Someone who has been severely burned. We were able to rescue one person from the burning building, but man, he's a crispy critter—I don't know if he'll make it. That corpse is one crispy critter—they'll need dental records to ID the person.
2. Something that has been burned in the cooking process. Ooh, that's a crispy-critter—give me that piece of toast.
n. a person under the effects of marijuana. (From the brand name of a breakfast cereal.) He’s fried all right. A real crispy-critter.