Referring to swine serving into rectal night soil. See all the similar glyphs. Swine, boars and pigs do acquire 'bad habits' (per pig ranchers and farmers) and require supervision of mating to overcome or prevent the development of 'abnormal behavior' (for pigs, say the ranchers and farmers). Often when young boars are 'run together' they develop the habit of「serving into the rectum」of another animal, in this case that of another young boar. Other, less common behaviors such as masturbation do occur, and when boars continue these habits they should be culled (or for human beings in dynastic China, perhaps it was time to move to the 'big city'…see that glyph for details). Boars that may have been isolated from sows will require a period of adjustment and social contact with females prior to being 'worked' due to an acquired affinity for other boars and for the rectums of other swine rather than vaginas, say the ranchers and farmers. Elements need no further explanation, but let us know if you think they do.
　Without a doubt, the Irish also have knowledge of their own to pass along in these trying times:「Masturbation will not spread coronavirus, especially if you wash your hands (and any sex toys) with soap and water for at least 20 seconds before and after.」Nonetheless and regrettably, unlike in dynastic China, it must be undertaken alone to truly be a preventative countermeasure but still achieve the desired result with some degree of safety.
　 　[　https://www.sexualwellbeing.ie/sexual-health/sex-and-coronavirus/ 2020-03-31　]　
　The Dutch, too have the same solution—it seems masturbation has become mainstream in the media the world over due to the coronavirus (it has always been 'the main stream' in reality, albeit covertly for most folks):
　「'Don't have sex with your partner if they have been isolated because of (suspected) coronavirus infection,' the RVIM says. 'Sex with yourself or with others at a distance is possible (think of telling erotic stories, masturbating together).'」
　　[　https://www.theguardian.com/world/2020/may/15/dutch-official-advice-to-single-people-find-a-sex-buddy-for-lockdown-coronavirus 2020-05-16　]　
　Needless to point out perhaps, but Chinese shamans from antiquity hit upon the same solution as a pandemic preventative countermeasure, honed for ultimate client satisfaction by utilizing naked females with no-longer-integrated feet as masturbatory sex buddies available for short-term rental with erotic visualization of live prepubescent female genitalia engaging in autoerotic stimulation herself, as a solution to the same problem facing us now, but in pre-Internet days.

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: hog; pig