Top Definition
Many women like to masturbate in the tub, using a gentle stream of water to massage the clitoris. Doing this usually involves lying in a wet tub on one's butt. When done frequently, this can lead to tough, scaly skin forming on the region above the tailbone.
My pussy seen so much euphoria lately. Masterbutt be a small price to pay.

OK so now I'm a masterbutt. A very happy clit!
by pussyshell February 03, 2014
8 Words related to masterbutt
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