A gumbat is a simple design which can be reinterpreted in many ways.

In essence, a gumbat is a large piece of stick (a bat) covered in gum (preferably post-chewed, bubbalicious works best).

A gumbat is the most efficient of weapons because whilst one is beating an invidiual with the said bat, the gum will effectively rip off all of their body hair.
Sarah: THAT HOE IS TALKING TO MY MAN!
Suz: take a fucking gumbat to her nappy-headed skull.

or, in more colloquial language

Bob: That math test was so hard, I felt like someone was beating me with a gumbat throughout the whole thing.
by Sophie S May 7, 2007
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