Referring to a HARD AND UNNEEDED BYPRODUCT, or the CRUST, SCRAP that remains after performing some task. Modern elements are「penis, on all sides arrayed over skin, from stretched skin in your crotch.」The CRUSTY SCRAP is normally discovered sometime the following morning after thoroughly drying, a BY-PRODUCT. Some say that the original elements were「penis throbbing between legs」and「copulation with stretched skin of crotch」but morphed leaving the modern left element of「superfluous, unneeded from erection and masturbation」or「penis and foreskin after masturbation」and refers to HUSK, CRUST. All in all, it seems a throbbing penile erection in crotch was depicted three times in this one glyph, emphasizing the「stiff, hard」part of something, such as a HUSK, HULL, or HURD. Some scholars say this glyph means hand bell (from「dong, clapper」) and others explain that the left element morphed from「penis helmet with copulation or due to bent appendage」(as crust on head 冃). Note that individual elements displayed vary by font.
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.

External source definitions …excluding politically incorrect concepts and other meanings deemed offensive today; may include extended definitions, euphemisms, and mnemonics)
Chinese: shell; carapace; crust (earth's crust etc); also pr.
Japanese EDRDG: husk, nut shell
Unihan extended: casing, shell, husk, hull, skin