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1.
The colossal poop after not visiting the toilet for a few days. Named for its ring-destroying properties.
My ring was bleeding last night. Not because of the curry, though. Just a regular ol' Mount Doom.
by More Dork December 08, 2010
 
2.
the monstrous mountain deep in mordor in the lord of the rings movies. Always spewing lava.
The one ring was forged and destroyed in mt. doom. BTW return of the king is NOT overhyped.
by adrian January 01, 2005