「Rod emissions, stuff flying out」with「bougie reaming」as being HIT directly, hitting the nail on the head most likely by reaming the penile head through the meatus up to the prostate gland using a long nail with a raspy tip while treating a case of gonorrhea, causing backed-up stuff under pressure to fly out of one's rod as the blockage begins to clear. Other meanings need no further explanation other than to point out some of the given Japanese meanings have evolved without understanding the glyph's association with the underlying necessary medical procedure, nor of local officials in China relentlessly striving to implement administration of disease controls. Ingesting alcohol, orally or anally, prior to the start of each session tended to mitigate pain, as alcohol was initially used as an anesthetic. Glyph was perhaps the source of the English expression about one's head being nailed, and the Japanese concept behind a lunchbox for someone quarantined or hospitalized and unable to walk home for meals.

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: (onom.) dong; ding dong (bell); at or in the very same…; suitable; adequate; fitting; proper; to replace; to regard as; to think; to pawn; (coll.) to fail (a student); to be; to act as; manage; withstand; when; during; ought; should; match equally; equal; same; obstruct; just at (a time or place); on the spot; right; just at
Japanese: this, aim, object, purpose, end, expectations, prospects, hopes, something that can be relied upon, snack served with alcoholic drink, pad, guard, blow, strike, per, exactly, surely, certainly, just, on the verge, duly, naturally, the … in question, hit, success, guess, prediction, affability, friendliness, sensation, touch, bruise, situation in which a stone or chain of stones may be captured on the next move, bite, each, to be hit, to strike, to touch, to be in contact, to be affixed, to be equivalent to, to be applicable, to apply to, to be right on the money, to be selected, to win, to be successful, to go well, to be a hit, to face, to confront, to lie, to undertake, to be assigned, to be stricken, to be afflicted, to be called upon, to treat, to lash out at, to be unnecessary, to be hitting well, to be on a hitting streak, to feel a bite, to be bruised, to spoil, to feel out, to probe into, to check, to shave, to be a relative of a person, to stand in a relationship, to hit, to expose, to put on, to put against, to hold on, to hold against, to allot, to call on someone, to guess, to make a hit, dried squid, dried cuttlefish, insinuation, innuendo, spiteful remark, guessing, reasonable, obvious, usual, common, ordinary, commonplace, the norm
Unihan extended: bear, accept, undertake; just
EDRDG: hit; right; appropriate; himself

Used within names (nanori)
たい