Elmer Fud is a character from the Warmer Brothers Bugs Bunny animated series of children's cartoons and used as a mnemonic device. I assume the ELMER acronym is

Elmer Fud is a character from the Warmer Brothers Bugs Bunny animated series of children's cartoons and used as a mnemonic device. I assume the ELMER acronym is some set of metrics used to judge the validity of a claim to determine if it is FUD or not.