Glyph is a time and billing notation used by original shaman cave o' wonder proprietresses:「orifice with bone meat」as the optimal time to「turn a trick」and get a servicer provider hooked up with the next-in-line client,「larval meat, screwing meatus in pubic bone」(perhaps this older glyph was created prior to the advent of no-longer-integrated feet as surrogate orifices).
　「Mouth orifice with pubic meat」「mouth with a boner」elements suggest that the average oral copulation blowjob in dynastic China might have lasted about ONE-QUARTER OF AN HOUR, FIFTEEN MINUTES—and may still today. Likely the source of the English expression regarding one's 'fifteen minutes of fame' spent with a divine service provider, as「mouth with a boner」: perhaps Andy Warhol studied Chinese…and, by the way, how else can you explain these element combine to mean fifteen minutes? as the duration necessary to please a「pubic bone meat orifice」?…could very well be.
　Average time for dog-bitch copulation to be completed: recall from freshman biology class that the penis of a dog contains a baculum, a spear-shaped bone that enables the start of copulation at a moment's notice, since the penis is therefore ready-hard at all times. Male canids, the「dogs」are endowed with a very special penis, unlike any other penis. The dog schlong is equipped with two glands located at the base of the shaft that engorge and harden upon erection, normally after baculum penetration into the bitch's vaginal orifice. As stated, the baculum is a bone located within the dog's penis that enables rapid insertion before the meat window closes, or the 'eye blinks.' These locking bulbus glandis swell large enough to prevent the penis from being extracted from the bitch's vagina for quite some time, normally ten to FIFTEEN MINUTES, give or take a few minutes, to allow the dog's semen sufficient time to get enough of a head start toward the bitch's ova that the male might actually sire some pups and complete his mission in life, rather than the next dick dog waiting to mount the same bitch in heat.

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)
Unihan extended: quarter of an hour