A「brook」is defined as a SMALL NATURAL STREAM, often but not always containing a「flow of fluids with larvae.」
　「Flow of fluids with meat orifice」such as mucus, ejaculate, or lymph. Male humans normally sport a pair of bulbourethral glands that are about the size of a pea and located near the base of the penis. When the SELECTION of a mating partner is intended and sexual stimulation occurs physically and/or mentally, the bulbourethral glands secrete a drop or two of clear mucosal pre-ejaculatory fluid, often containing at least few leaked spermatozoa (the「larvae in the fluid flow」), known in the common parlance as「pre-cum」or「precum.」It is an excellent strategy to examine and sniff this fluid exuded by a mating partner prior to any physical engagement, since by doing so a current dose of gonorrhea or other sexually transmitted disease may be detectable by one's olfactory sense, which can influence the SELECTION of a mate. Moreover, if this fluid is not PURE and CLEAR, the internal glands are likely infected, so one's sense of sight also has an important role (CAUTION: do not attempt selection via the sense of taste at this point with one's「tonguing mouth」nonetheless, that degree of closeness is necessary in many cases). This strategy was originally referred to long ago as the exercise of common sense, that is, the senses that are common to most everyone and exercised for the purpose of avoiding trouble. In modern times, common sense has utterly vanished, apparently. Note that the ancient Chinese had invented a microscope with which to view these human「larvae」: see 孑 for details.
　WEEP means to exude drops of a fluid involuntarily as an expression of emotion, such as when crying tears, but also to cover a wound with a scab, SEROUS FLUID.「Flow from orifice in meat」are FLUIDS WEEPING from a wound or pore that GLISTENS and SHINES and likely also cause crying tears from pain and as a person realizes that the infection has worsened. Literally, a flow covering loose and dripping meat that WEEPS from a wound and later forms a scab, a flow difficult to comprehend, mysterious.
　「Flow of larvae」perhaps refers to CLEANING A FESTERING WOUND OR INJURY, CURING A FAILING OR DEFECT which you have been unable to correct by yourself with other means. By allowing the maggots to GORGE UPON the putrid flesh the wound can begin to heal. SEROUS FLUID also attracts flies…not only is it a quick and nutritious meal for the mother fly, but also is an ideal spot to lay her many maggots that can then begin feeding immediately, and, have ready-made entry into meat, greatly enhancing her brood's chances of survival:
　「Maggot therapy is also known as maggot debridement therapy (MDT)…It is a type of biotherapy involving the introduction of live, disinfected maggots (fly larvae) into the non-healing skin and soft tissue wound(s) of a human or animal for the purpose of cleaning out the necrotic (dead) tissue within a wound (debridement) and disinfection. …Written records have documented that maggots have been used since antiquity as a wound treatment. …Maggots clean up the already dead tissue thus preventing further infection spread. …In January 2004, the U.S. Food and Drug Administration (FDA) granted permission to produce and market maggots for use in humans…. The use of maggots to clean dead tissue from animal wounds is part of folk medicine in many parts of the world. …Maggots are contained in a cage-like dressing over the wound for two days. The maggots may be allowed to move freely within that cage, with the wound floor acting as the bottom of the cage. Or the maggots may be contained within a sealed pouch, placed on top of the wound. The dressing must be kept air permeable because maggots require oxygen to live. When maggots are satiated, they become substantially larger and seek to leave the site of a wound. Multiple two-day courses of maggot therapy may be administered depending on the severity of the non-healing wound.」
　　[　https://en.wikipedia.org/wiki/Maggot_therapy 2013-01-22　]　
　And then with some males, there is also that last clear drop or two of bulbourethral fluid exuded from the meat orifice, or penile meatus, after ejaculation as well.

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: brook; to select
Unihan extended: brook, stream; select; pure
EDRDG: drop; pure