monkey mouse Posted in M Best definition monkey mouse A pet cat that’s acting silly or hyper, but not in a bad or destructive way like a rat monkey. Having fed kitty some catnip, Susan enjoyed watching the purring monkey mouse rolling around on the floor ecstatically. How satisfied are you with the definition? Looking for monkey mouse meaning? Delighted that you discovered the greatest determine on our web site! Recently this definition was actually observed 46 times.