Apparently it is one of these "if you have to ask..." sort of things. Just like Premier actually, only it is FAR more exclusive and exalted than lowly prem status. I have it on good authority that members who have been muccified even outrank members of the Order of the Garter in the order of precedance. The exact number of Muccis or even the maximum number permitted to attain this social standing is unknown but to a select few.