This is a nickname for someone who has a four-inch penis. A four-inch penis, especially among high school students is considered to be very small. Anyone who has this nickname must have a very small penis. You simply combine the "F" in the word "four" with the word "inch" and add the "y" at the end for comical relief.
Tommy must really live up to the name Finchy because every girl that he has been with says he has a tiny dick!
by SmoochyPoo October 30, 2018
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by James B Oned April 10, 2009
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