The art of fingering a woman by surprise in a way that resembles the pitch of professional softball player Jennie Finch
I saw a walking down the street in a mini skirt so I Jennie Finched her

or

JENNIE FINCH!
by thatonefunkychickenguy April 24, 2007
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When you wind up your arm and fingure her underhand, warming up the clit before haveing sex.
Phil: Man, dude I'm finna Jenny her Finch tonight.
Tom: ya dude wind it up!!!!!!
by Catch of the day 1969 July 18, 2009
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