Buttologist
A person engaged in the scientific study of butts.
One who is highly skilled in buttology
One who is highly skilled in buttology
As a buttologist his skills were unequaled as he got his head into his work deeper than anyone we've ever known.
She spent so much time focussed on butts that everyone considered her the finest buttologist in the world.
She spent so much time focussed on butts that everyone considered her the finest buttologist in the world.