1. A humorous name, term, or term of endearment, for a fat or slightly overweight person. Especially a less youthful person.

2. A humorous name, or term, for a morbidly obese person, especially a less youthful person...provided they don't hear you.

Woman (aged over 28): "Do you still love me as much, now that I'm fat and old?"
Partner: "Of course I don't Chunkosaurus"

From the words Chunky and Brontosaurus.
See: Gigantopotamus
by Goatlips July 12, 2008

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