Passochistic 

Being passionate about something that can also occasionally be grueling or painful in a ultimately gratifying way.

I take a passochistic delight in loading and unloading my car with musical gear while getting minimal sleep

Passochistic by slumdom April 4, 2023

Assochistic 

A state in which an individual indulges in experiencing pain in the rear end.

That boy was laughing while he was being spanked. He is Assochistic.

Assochistic by boombangbob October 21, 2011