Top Definition
Mammoth- sized, accommodating space used by cruise-goers to remove the scum and dirt from their vehicles.
Guy: "Wow, your car looks really clean"
Friend: "Yeah thanks, I stuck it in the Rhiann-o wash, gets it all polished in no time!"
Guy: "Oh yeah, that place is really cheap too!"
by AnnoDomini April 29, 2009
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