A phrase that's used among farmers that refers to the dirt stain on the side of your fingers that doesn't wash off until winter.
Person 1: Hey have you found any way to get that dirt off your hands?
Person 2: No, that's crud finger, it won't come off until the winter.
Person 2: No, that's crud finger, it won't come off until the winter.
by organicintern July 12, 2009