Someone who after taking a dump; wipes so meticulously that no trace of the event remains. Ass perfectionists are notorious for using exessive amounts of toilet paper, baby wipes, and generally taking forever, much to the dismay of anyone waiting in line.
"God damn! How long is he going to take!?"
"Don't hold your breath, he's an Ass perfectionist after all."
"Don't hold your breath, he's an Ass perfectionist after all."
by Alexiosassypants August 17, 2016