The unfortunate result of ones finger breaking through toilet paper while wiping. Usually this is a result of inferior toilet paper.
Gus: Hey Peabody have you been working in the garden again? it looks like you got dirt under your nails.
Peabody: Geez errr that's just Mudfinger, Clarice needs to stop buying our tp at the five and dime, that shit is see-through.
Peabody: Geez errr that's just Mudfinger, Clarice needs to stop buying our tp at the five and dime, that shit is see-through.
by qochaka February 2, 2015
Same as wet waldo. Sticking your hand down the back of someone's pants and violating their anal orifice with your finger.
The lights went out in the elevator, so I grabbed the girl next to me and slipped her the Mississippi Mudfinger.
by Stan B. September 1, 2003