muddy harmonica Posted in M Best definition muddy harmonica A type of reversed blumpkin where a guy eats out a girl while she is taking a shit. Brian asked, “Hey can I get a blumpkin”? Meredith replied, “I guess, but only if I get a muddy harmonica first”. How satisfied are you with the definition? Looking for muddy harmonica meaning? Delighted that you discovered the greatest determine on our web site! Recently this definition was actually observed 7 times.