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Someone who is large, fat or obese. Normally those who are also unattractive and over-emotional. Thus, there is a surplus of ALL parts of them.
Austin is an immature blubberous idiot who needs to leave beautiful girls like Gabrielle alone.
by skippylou May 11, 2010
A mythical beast comprising of the body of a hippo, the trunk of an elephant, a rhino's horn, a walrus' tusks a whale's tail.

Also: an adjective used to describe severely overweight people.
"Dude run there's a blubberous behind us and it's charging!"

"Man that ho has a big ass, she is blubberous."
by sasasgreensam May 13, 2009