Buttsexitis 

A somewhat uncommon medical condition in which the afflicted party is hopelessly addicted to any of the butthole pleasures.

John was diagnosed with a severe case of buttsexitis, but he kept claiming that it was not about the butthole pleasures.

Buttsexitis by ThreeTwelve November 24, 2007

butteritis 

When your body becomes filled with butter instead of blood. And when you bake yourself you become a whole biscuit.

Woah do you see Billy over there I heard he has butteritis.

butteritis by Blackbutter February 19, 2019