A way of life, a Muir is a person who cleans dishes at pubs for drug money and spends the rest of his days crying over little bo peep and her lost sheep.
A muir is a viscious and mean spirited being who is often homo-satanic.
It is said that if a Muir looks at you in the eyes and sings Stairway to Heaven backwards you freeze and become a little lost sheep of his own creation.
If someobody is crying or moaning bo Peep, then you say stop being a muir
Or if a mean gremlin is attacking you for food say ' Get away you big green MUIR!!!