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. August 31, 2003
Mooning someone while pushing your genitalia backwards toward your butt crack. Similar to a fruit salad
by Stan B. January 16, 2003
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The practice of cutting holes in the genital areas of people in photographs, then inserting one's fingers as a means of deriving sexual pleasure.
by Stan B. July 25, 2006
by Stan B. January 16, 2003
by Stan B. January 16, 2003
by Stan B. January 30, 2003