Swearing and/or speaking in ghetto to someone.
John: Hey Adam, imma shank you!
Adam: Oi! Stop black mouthing me!
by GhEtT0GeE December 3, 2011
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The after taste of a cheap cigar.
Hey bill, I have a bad case of captain black-mouth
by mike o. May 26, 2009
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A dog that is generally friendly and happy. Does great with other pets.

Fun facts from Wikipedia: They originate from the American South (the Southern United States). The Southern Black Mouth Cur Breeders Association, a breed club, was started in 1987 to support this breed, and the United Kennel Club recognized the breed in the year 1998.
I have a black mouth cur dog named Kacey, and a golden retriever named Zelda. They get along with each other so well. Also, they're very friendly to family members, and people visiting the house (guests)
by thedude_haji March 23, 2022
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