Top Definition
An extremely unappealing woman, usually of the genus fatticus femininis. While grizzly in appearance, the slumpbust serves a valuable purpose. A man who finds himself in a slump (whether in baseball or some other aspect of life) may attempt to break or bust that slump by taking home a local slumpbust and riding that slump into oblivion. Please note that a man who has sex with a slumpbust is making a tremendous sacrifice with the intent of self-improvement, and therefore should not be subjected to ridicule and torment by his peers.
She's pretty hot, but her friend is a total slumpbust.
by Brian Gaffney August 06, 2004

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