1 definition by Thomas D

Ugmo -noun
pl-ugmos

An ugly monster. Lisa Simpson once said it.
Jen:

"some of them are gorgeous, some of them are plain, a few are ugmos"

Or, from The Simpsons:

Lisa: I'm an ugmo.
Homer: Now, that's not true. You're cute as a bug's ear.
Lisa: Fathers have to say that little stuff.
Homer: Dad, am I cute as a bug's ear?
Grandpa: No. You're homely as a mule's butt.
Homer: There. See?
by Thomas D March 11, 2006
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