1) (noun) A male that has an excessive temper, an ego to match it and alienates all the people arround him as a result. Any desire to run for public office by this individual will end in defeat( making this a perfect gambling opportunity). Avoid a Mattox at all costs.
2) (noun) A sexual position involving three men and a goat. The number of men is variable but the presence of the goat is required.
"I don't have the bail money to be friends with another Mattox. The last bankrupt me and I don't even know what became of mah goat."