One of those
beautiful words that isn't exactly part of the english
language, but should be. It's certainly part of my
vernacular.
Used to refer to a person or persons who is extremely unattractive in the physical AND mental sense. A mesh of the words ugly, moron, ogre, and troll. Has more impact than either ugly or moron alone. Needs to be pronounced aloud, and preferably heard used in context, to be understood completely. Reserved for special occasions. Try it out.
UUUGGG-MO!
Some examples:
"That beefed up nail-head in my Literature class is ugMO."
"See that woman in the produce aisle with the mullet and the 'nuke the whales' tank top, packing in the frito-lays? Ugmo!"