Describes any sort of connection to a host, often for sustenance, such as a parasitic vine climbing a tree.「Raise legs and feet」with「vertical motion」describes actions that CONNECT TO A VINE…seems obscure, until all the glyphs meaning VINE and CREEPY are reviewed. Glyph formerly included element on left of「loose and dripping small stream, ejaculate」(糾) suggesting a wrap-around connection to something that lacks internal support, to GATHER PIECES and then WADDING INTO A BALL, ENTANGLING two things together. Vines do not possess the physical structure to permit standing alone, hence vines creep along the soil until an erect tree, wood (木) or woody is located, at which time the parasitic vine begins to wrap itself around the erect wood and climb with vertical motion, using the host for support. These same attributes can apply to a person with pulverized feet bones who became a service provider in dynastic China using both bound and no-longer-integrated feet as work tools, someone who often must creep along the floor or ground, or hop like a bunny-coney or bird chick after having her feet no-longer-integrated. Moreover, loosened vines dangling from the side of a large tree strongly resemble the curved shape of a loose leg and no-longer-integrated foot while in use by a client.
Elements as「bite with teeth, grip grab or seize quickly」with「rod, vertical motion」especially with the originally-included left element of「loose and dripping small stream」(糾) suggest a bitten appendage of a man with all the expected reactions of quickly seizing by the head and dislodging the offending mouth while performing an involuntary 'V sit-up,' perhaps cursing loudly or uttering an expletive, too: GATHER TOGETHER PIECES, ENTANGLE BY WADDING INTO A BALL, then INVESTIGATE AND MAKE CORRECTIONS, attempt the REASSEMBLY BY FITTING TOGETHER PIECES are other meanings given by some external sources.
Also used to depict the sides of「prepubescent girl's tied hair」since that style entailed gathering left and right sides into a WADDED BUN SHAPE on each side at the top of the head…perhaps not to be confused with a bunwad, although that is the shape described, and the parts of the head that the client would likely have grabbed ahold of to dislodge the mouth.
Some sources suggest this depicted an ancient niddy-noddy or some other sort of tool shaped with a handle that was used to wind yarn or thread into a skein as it was produced by a spinning wheel to prevent it from becoming entangled, but that suggests a meaning opposite of those given in dictionaries of「entangled, wadded into a ball.」Note this element is often drawn with three strokes in Japanese, but only two in Chinese glyphs.
「Viewing women as commodities [see 品] was also made customary from Song Dynasty (960 - 1279) forward, both in the suddenly expanded labor market and within relationships. Men could sell their female kin to slavery or prostitution, and frequently did.」
[ https://www.zum.de/whkmla/sp/0910/hersheys/hersheys5.html 2011-04-05 ]
「Bound feet were a mark of beauty…. Women, their families, and [her owner] took great pride in tiny feet, with the ideal length, called the 'Golden Lotus,' being about 7 cm (2.75 inches) long. …The process was started before the arch of the foot had a chance to develop fully, usually between the ages of 2 and 5. …Qing Dynasty sex manuals listed 48 different ways of playing with women's bound feet.」
[ https://en.wikipedia.org/wiki/Foot_binding 2012-12-17 ]
「In traditional Chinese medicine, there has never been a mental disease called pedophilia (or an equivalent term), or homosexuality, or most of the other so-called sexual variations for that matter. …Children are usually described as natural sexual beings and erotic stimulation and sex-play are seen as beneficial to their healthy development.」
[ https://docx2.com/wp-content/uploads/Are-Any-of-the-Pharaphilias-in-DSM-Mental-Disorders_.pdf 2023-05-14 ]

External source definitions …excluding politically incorrect concepts and other meanings deemed offensive today; may include extended definitions, euphemisms, and mnemonics)
Chinese: archaic variant of 糾|纠
Japanese EDRDG: to join or connect the vine
Unihan extended: to join or connect the vine