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That looks a bit search'n'replace run amok, although I fail to see what the first half of s/?/sphincter/g could be.

The end result is certainly unlovely though: rather colonoscopacetic, if you will.

I searched the same thing, decided it's probably a pun on "perfunctory" + sphincter-clench-inducing

Is there a rule where everything exists in hashtag form? Just over a year ago #persphinctery

The writer probably wished to say "perfunctory" but experienced a brain fog moment.