「Insect, worm」with「hand on meat」refers to constant itching and scratching. Infestations in many cases can repeat within the same host, many times in a revolving cycle of an insect's eggs to worm-like larvae to adults to eggs and so on, in an「ongoing, continuing worldly existence」of life cycles.「Worms are there, having worms, insects」refers INTESTINAL PARASITES such as tapeworms, flatworms, pinworms, roundworms, whipworms, botworms, hookworms and all their kin.
　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 barefooted, particularly 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　]　
　「Loose dripping in orifice with ongoing worldly existence」as a REPEATED INFESTATION, an INTESTINAL PARASITE invading an orifice again and again that aptly describes a lord/owner with his concubine harem.

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: old variant of 蛔
Unihan extended: the common intestinal worms, the tapeworm
EDRDG: the common intestinal worms; the tapeworm