It is difficult to argue against the prudence of advice to HALT, CEASE, STOP whatever may have been in progress when「stuff begins flying out of a plugged orifice.」…an orifice of any size, large or small.
　「Dazzling filled orifice」fundamentally seems to mean FASTENED TOGETHER, something that obviously will DETAIN a while in order to STOP and FASTEN THE CONNECTION, or「hook up」as said in the vernacular.
　Modern usages also seem to be a PRONGED HEAD, or, a LOOSE tongue due to usage of this element to replace others with simplification. One quick way to stop, or at least slow down most animals is to BIFURCATE THE HEAD, causing「loose stuff to fly out.」The second, seemingly unrelated meaning is because this same element was used to simplify LOOSE TONGUES of many birds chirping in a nest (so say the pundits), also a concept of PRONGED HEADS (甾) that appear bifurcated, i.e., a gaggle of hungry pre-fledgelings vying for regurgitus from a parent bird and hoping for hooking up and receiving a「filled mouth」that together resemble Medusa's nest of snakes, also fits both meanings, which is perhaps why it was selected as the simplified version…snakes also seem to have LOOSE TONGUES.
　Snakes and other reptiles have「branching, skilled glans」(岐) as a PRONGED BIFURCATED HEAD:「A hemipenis (plural hemipenes) is one of a pair of intromittent organs of male squamates (snakes, lizards and worm lizards). Hemipenes are usually held inverted, within the body, and are everted for reproduction via erectile tissue, much like that in the human penis. Only one is used at a time, and evidence indicates males alternate use between copulations as a behavioral means of increasing sperm transfer when the interval between copulations is relatively brief. The hemipenis itself has a variety of shapes, depending on species. Often, the hemipenis bears spines or hooks, in order to anchor the male within the female. Some species even have forked hemipenes (each hemipenis has two tips).」
　　[　https://en.wikipedia.org/wiki/Hemipenis 2014-06-23　]　
　Scholars explain this element means to stop an opponent's incoming lance or sword blow, catching it between the prongs of a defense weapon by hooking up with it.

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)
Unihan extended: stop, halt; stay, detain, keep
EDRDG: fasten; halt; stop