「Twenty or so, screwing on both sides」might suggest that the associated often-used skin has become a bit LEATHERY after years of applying salts and drying agents if referring to a service provider's feet (䐈).「Twenty or so」「vulvas in array」as A LOT OF SPLAYED SKIN, that of females posing who have been DEPOSED, as in 'removed from the normal position within society' hoping to be selected while on display at the meat market or sex slave auction.
　Also meaning REFORM, REVOLUTIONARY, TANNING THE HIDE of someone posing in an official position and then being DEPOSED, with elements as「bastards screwing orifices.」
　「Twenty or so, needle twisting in orifices」or perforated holes, perhaps depicting the process of stitching together pieces of ANIMAL HIDE. After skinning, a hide was often soaked in lime to remove everything from its「two sides」: any hair from the outer side, and clinging fat, small meat chunks, veins and remaining hairs were scraped off until the inner skin was clean. The hide was then stretched taut and tacked to a flat piece of wood until dried. After removal from the stretcher, the hide was chewed (literally, by humans originally) bated and beaten to break down the internal structure until it became sufficiently soft. Then the hide was tanned in a concoction of feces, urine, salt, and brains as a preservative measure: the tanning process used to manufacture LEATHER. Removal of a hide entailed the insertion of a sharp object into the anus, cutting that orifice wider, and then pulling out the flesh, bones, and viscera through the widened rectum as the skin was rolled toward the nose and front paws, surrounding the meat of the animal. Glyph itself resembles a splayed carcass, to some folks, or A PIECE OF SPLAYED SKIN.

Modern definitions (that generally disregard history) …excluding politically incorrect concepts and other meanings deemed offensive today; may list only pigeonholed definitions, euphemisms, or meaningless mnemonics)
Chinese: animal hide; leather; to reform; to remove; to expel (from office)
Japanese: leather, tanned animal hide, kanji "leather" radical, strap, thong, leash, to be renewed, to stand on ceremony, to be formal, to take a turn for the worse, to change, to alter, to revise, to replace, to reform, to correct, to mend, to improve, to do properly, to do formally
Unihan extended: leather, animal hides
EDRDG: leather; skin; reform; become serious