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A low-key term for a mud shark. Best used in circles where the term "mud shark" is already too well known.
Friend 1: "Hey did you know Natalie is having a kid with her pimp?"
Friend 2: "She's quite the spiny dogfish that one. I knew she would end up a baby-momma sooner or later."
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by JCL425 April 12, 2017
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