「Divided, emissions」「person」and「orifice」depict a person with opened legs in a V-shape, or a「person's emitting orifice between legs」as it refers to scatological or other glandular excretions, with「gaping wide open」or「deficient and in need of correction, with a gap, blowing hard open-mouthed」describing a WANTON POSE, to WANT, someone in a condition of unrestrained GREAT DESIRE with a 'just do it' deep feeling in one's loins (see 慾).
　Of course, elements perhaps also depicted the DESIRE for a「valley gap」amidst a mountain range that needed traversing by pilgrims, as some members have suggested…you decide for yourself which meaning the sages were laughing about, and which meaning fits the remaining given definitions of external dictionaries.
　LUST and COVETOUSNESS also stem from「V-shaped crotch」with「blowing hard」or,「mouth wide open, gaping」at V-shaped cleavage and crotches, still a common pastime during Spring Break and at summer beaches worldwide.
　Also depicts gorging oneself in hyperphagic GLUTTONY, perhaps performing fellatio with long line of clients/buddies, or perhaps excreting while seated upon a chair with a cut-out seat, enabling the person so seated and feasting to defecate and/ or urinate spontaneously, and as a convenient place for bulemic purging, forcing regurgitation when needed, into a pot placed below the open hole in the seat so as to not require getting up and leaving the table, but much more importantly, to continue gorging unabated without the volume limitations that are naturally placed upon the human digestive system and alimentary canal. This is precisely the manner in which European royalty and aristocracy also dined, in past ages…and nary you mind the stench and sounds while eating yourself, if sitting near the lord or one of the princesses…or you may wake up dead to find yourself「decapitated.」Note that servants occasionally came around looking inside and emptying the pots to prevent spills and overflowing.

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: desire; appetite; passion; lust; greed; to wish for; to desire; variant of 慾|欲
Japanese: greed, craving, desire, avarice, wants, to want, to desire, wanted, wished for, in need of, desired, I want to, covetousness, to wish for, to covet, greedy, avaricious, acquisitive, to be greedy
Unihan extended: desire, want, long for; intend
EDRDG: longing; covetousness; greed; passion; desire; craving