1 definition by nikki-j

When you take your index, middle, and ring fingers and gently poke a close friend in the upper thigh / buttocks region. Ideal to be the first one to remember on Friday.
(An ancient Italian custom.)
Hey man, did you finger Jordan in physics class today?

Yeah brah, I got her so hard for Three Finger Friday.
by nikki-j October 07, 2011

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