Mucking Out The Stables Posted in M Best definition Mucking Out The Stables Anal sex Mucking out the stables is a term in the UK relating to how stable boys remove horseshit from the horses living quarters. I think you get the picture? “I’d like to muck out his/her stables” How satisfied are you with the definition? Looking for Mucking Out The Stables meaning? Delighted that you discovered the greatest determine on our web site! Recently this definition was actually observed 55 times.