「Repeated worms hooked between spread legs」refers INTESTINAL PARASITES that are also FIRMLY ATTACHED, CONNECTED such as tapeworms, flatworms, pinworms, roundworms, whipworms, or hookworms. Intestinal parasites were a common problem 10,000 years ago when many folks snacked on raw meat and walked around barefooted, and are a common problem today since many folks still snack on undercooked meat and walk around barefoot, such as children:
　「There are a vast number of worms that can live within the human body. The worms live in the digestive tract, especially in the intestines, from where they obtain their nutrition. Hence, worms are parasites living within the body of humans, who are the hosts. …Worm infestations are present in people of all ages but they are much more of a problem in children who are just beginning to learn to cope with their parasitic enemies. …Intestinal worms, quite simply put, are worms that live within the intestines of humans. These are parasitic worms which feed on the food that passes through the human digestive tract. All these worms spend their entire lifetimes in the intestines of humans. They breed within the intestines and hence increase their populations. The worms have hook-like attachments on their heads (called a 'scolex') by which they attach onto the inner lining of the intestines. Though worms are generally found in the intestines, they can also be found within the stomach and the rectum. …Worms [were, 100 years ago] present in the intestines of all human beings.」
　　[　link now-dead was https://www.ayushveda.com/health/intestinal-worms.htm 2012-08-28　so instead see　[　https://theconversation.com/they-might-sound-gross-but-intestinal-worms-can-actually-be-good-for-you-49868　2023-15-17　]　
　「Snake」and「spread legs」only encompassing the snake's short leg portion, as「short leg between spread legs with vulva, two sides」a euphemism for both genital regions.「Inside」also stems from「inside a female animal's legs」(yes, the snake's legs) meaning FIRMLY ATTACHED, CONNECTED. Snakes have vestigial hind legs, claw-like appendages that are held「inside」around the cloaca, the orifice used for copulation, called「anal spurs」as barbs with which the female snake FIRMLY ATTACHES herself to the skin of the male snake during reproduction. The male snake possesses the same inner barbs but also has forked hemipenes (a「short leg with two sides」) normally held inside the body, and also attaches barbs to the inside walls of the female's cloaca, the snake's equivalent to a vagina. Hemipenes are half-open penises, with semen troughs exposed, so this FIRM INSIDE CONNECTION and ATTACHMENT FROM BOTH SIDES is vital. Thus,「repeated copulations among snake genitals, cloaca and hemipenes」are FIRMLY ATTACHED and CONNECTED. Furthermore, while the male snake possesses a forked penis, note that he normally does not copulate with two females simultaneously, a fantasy reserved for human males and bonobos, it seems. Further, this glyph is unrelated to silk-spinning caterpillars, despite what some sources say.
　Nevertheless,「repeatedly bobbing in juxtaposed orifices, rowdy loose and dripping in spread open legs」also describes two females FIRMLY ATTACHED to one another, with or without sharing a two-headed dildo, noting that this behavior is also an effective means of transferring a vaginal pinworm infestation to one's partner (see 鄅). Many, if not most, anthropologists understand that bonobos today exhibit the behavior of early humans, and modern humans, too:
　「Sometimes females would rather GG-rub [genital-to-genital] with each other than copulate with a male. Parish filmed a 15-minute scene at a bonobo colony at the San Diego Wild Animal Park in which a male, Vernon, repeatedly solicited two females, Lisa and Loretta. Again and again he arched his back and displayed his erect penis—the bonobo request for sex. The females moved away from him, tactfully turning him down until they crept behind a tree and GG-rubbed with each other.」
　　[　https://www.discovermagazine.com/mind/casual-sex-play-common-among-bonobos 2023-05-14　]　
　「Recent surveys of teenage girls and young women find that roughly 15% of young females today self-identify as lesbian or bisexual, compared with about 5% of young males who identify as gay or bisexual. …Female sexuality is different from male sexuality. If a straight boy kissed another boy, perhaps to amuse some girls who might be watching, he would be unlikely to undergo a change in sexual orientation as a result. But, as Professor Roy Baumeister at Florida State University and others have shown, sexual attraction in many women seems to be more malleable…. If a teenage girl kisses another teenage girl, for whatever reason, and she finds that she likes it—then things can happen, and things can change. If a young woman finds her soulmate, and her soulmate happens to be female, then she may begin to experience feelings she's never felt before.」
　「Especially if all the guys she knows are losers.」
　　[　https://www.psychologytoday.com/intl/blog/sax-sex/201004/why-are-so-many-girls-lesbian-or-bisexual 2023-05-17　]　

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: Yu the Great (c. 21st century BC), mythical leader who tamed the floods
Unihan extended: legendary hsia dynasty founder
EDRDG: name of a Chinese emperor