The name of Bobby's super amazing, fluffy cat! Shaggy and orange, kinda like Garfield. :]
Also a codename used to describe a guy who is a player.
Bobby: Mom, where's Mr. Fluffy Cat?
Mom: I dunno. Sleeping, I guess.
Dude1: Oh my God, how did he get Nancy to go out with him??
Dude2: Cuz he's Mr. Fluffy Cat, duh.