(pron: fleh-shnuh-kuhl or fleh-shnar-kul depending on your dialect)

A fleshknuckle is a particularly hard piece of flesh under the skin. This can be caused by rapid weight-loss, or by surgery.

Fleshknuckles are common in people going through mid-life crises.
I was talking to my Aunt the other day and she just kept whinging about her fleshknuckle.

Hannah and I were having a great time until she discovered my fleshknuckle.

They have boob doctors, cock doctors, and even weird- people-that-want-pointy-ears doctors...why are there no fleshknuckle doctors?
by Wysard of Lord's Wood November 23, 2010

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