A mad catter is a recluse or hermit who keeps cats around and lives in secluded or abandoned places. The term comes from the movie Logan's Run, and is a pun on the phrase 'mad hatter'.
The old man living in the abandoned barn on the outskirts of town is keeping so many cats with him, by the time he's dead he'll be a mad catter.
by ILoveMyTulpa September 6, 2014