When a person sticks their fingers in any smelly orifice on their body such as their bellybutton, anus, penis hole or vagina, and their fingers get stinky

A game played in which you stick your finger into a friend or lovers anus, pull it out, sniff it and try to guess what they ate based on the smell.

The aroma left upon one's fingers after insertion into a woman's vagina during sex; implies lack of proper hygene, not on the part of the person achieving "stink finger," but on the part of the woman involved.

The Wonderful aroma of sticking your finger up someones anus and then sniffing it.

When someone sticks their finger up your vagina and then smells it and does it again.

This is gained when a chosen number of fingers are inserted into the vagina belonging to a Skank

To obtain an even worse case of stink finger: Two fingers are inserted into the vagina and the 'pinky' finger is inserted into the anus

When you finger a girl and you put your finger/fingers up to your friends nose.