Elements「rolled」with a「foot」or,「rolled back, raised rod of person, erotic body part」that refers to a BOLT in Chinese without more detail…nevertheless,「Bound feet were once considered intensely erotic in Chinese culture…Qing Dynasty sex manuals listed 48 different ways of playing with women's [no-longer-integrated] bound feet」(and after removing the bolt of binding cloth, of course).
[ https://en.wikipedia.org/wiki/Foot_binding 2012-12-17 ] And, intense eroticism causes the raised rod of a person's taut erection with a rolled-back prepuce, as the elements depict individually.
English dictionaries list more than 25 different meanings of BOLT, including but not limited to: a rod that slides into a socket and fastens a gateway. A rod with head for screwing. Suddenly dashing. A long wound cloth. Weaving goods prepared by shuttling back and forth with the cloth wrapped around a stiff piece of wood; a sudden discharge (such as lightning). To swallow hurriedly without chewing. To force into the open. To produce seeds. A collision smashing into another object. Stiffly upright and rigidly straight. An exhaustive effort. Needless to point out perhaps is that a「bolt of cloth」that is, cloth wrapped around wood, also describes a GROIN POULTICE and may apply to all those various meanings of BOLT.
「Rolled back, raised rod of person, erotic body part」also meaning THE HEAD, and used as a counter for HORSES…horses in the wild regularly masturbate on average every ninety minutes or so, leaving the remaining explanation to your imagination: see 馬 for specific details and citations. Chinese men regularly masturbated with the crushed feet of females, young and old. See examples of Chinese erotic art for the graphic details.
Used as a counter for SMALL FURRY ANIMALS such as rats, beavers, coneys, hares, and bunnies among others, perhaps for the same reasons this glyph refers to a bolting discharge, sudden dash, horsing around, and the head of something「rolled back, raised rod of person, erotic body part.」
ROLLED CLOTH or ROLLED WITH CLOTH derived from「rolled erotic」male or female body parts that are bound and contained unseen by a long cloth wrapped around them, such as a loincloth around loins, groins, poultice cloths for treating infection and absorbing discharges, and foot binding cloths on each foot. Counter for small animals may also be due to being cute as are the felt-like pelts of service providers and their actions who were forced to hop and crawl around on all fours and kept in pens.
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: a bolt (of cloth)
Japanese EDRDG: head, counter for animals
Unihan extended: roll, bolt of cloth; foot