Describes
da status of someone who is so fussy, orderly, and "by da book" dat if you tell him, "Up yer a**!" in disgusted response to his excessive expectations of perfection, he actually tries to persuade you to
stay and "follow through" --- in a literal sense --- on
said merely-figurative retort.
Be careful who you tell to "Shove it up your butt!" wif regards to overly-picky requirements --- if you say it to an "anal retentive"
person, he might actually put yer number on his
speed-dial in order to occasionally ask you for
said posterior-orifice "servicing".