A LAGOMORPH, a word derived from 'hare structure, shape' and 'hare' means「elongated legs, rapid motion」all of which describes dynastic Chinese service providers with stretchable feet since the bones had been pulverized (rapid motion was generated by clients, not the bunnies). Meaning here of BUNNY RABBIT,「permit from behind with emphasis on the male appendage or curled limb」(see 勉 for the reason, and why amputated rabbit's feet became a lucky charm). Likely relates to the English phrase,「pulling my leg」as used to describe using someone else in a slightly deceptive but playful manner for one's own advantage as a tease. May also be the 'hare' in the word 'harem' as it refers to polygamous female animals in a social group accompanied by a reproductive male who denies other males access to the group…or not.
Note that「bunnies」are supposed to be sex machines (including the human variety), copulating copiously and continuously, since service-providing bunnies「copulate like rabbits」: normally, 15-second bursts of intense copulatory activity and rapid motion, with about another 15-second period of panting, that occurs over many minutes in succession until one or the other participant (generally, the buck), collapses in exhaustion (as in,「the buck stops here」to mean「no more intense copulatory activity while kneeling from behind」). Broods averaging 10-15 kits (young rabbits) are squeezed out after only a month of gestation, maintaining the notion that rabbits are prolific breeders. Note that the elements of a Japanese variant are「repeatedly straight up into the vulva from behind while copulating.」
Human females with specialized skill sets and professional training are also referred to as「bunnies.」In China, in the past, very young such humans ineffectually attempted escape from would-be predators by hopping or crawling as do bunnies due to having feet recently no-longer-integrated by bludgeoning with a cudgel…and naturally, these「bunnies」really were intended as sex machines for copulating copiously and continuously, maintaining the notion that rabbits are prolific breeders and causing the result that today one-fifth of the world's population are of Chinese ethnic descent.
LAGOMORPHS are naturally selected and specialized for gnawing, but with the human variety, without the use of teeth of course—just really good gumming, lipping, sucking and tonguing, thank you. Seems to refer aptly to Chinese girls with no-longer-integrated feet sold and bought as sexual slaves and service providers ANYHOW, IN ANY CASE, the original human bunnies for playboys. CONEY in English formerly was pronounced in a manner that rhymes with 'bunny, money, honey, funny' and relates to words such as 'country, cunning, cunt, cunningly' for some examples, although today most of those associations have been forgotten. 'hare-brained' formerly meant a one-track mind focused solely on copulating that was ridiculed as a stupid strategy for guiding one's life, and to the female mental skill set required to become a successful bunny.

External source definitions …excluding politically incorrect concepts and other meanings deemed offensive today; may include extended definitions, euphemisms, and mnemonics)
Chinese: rabbit
Japanese EDRDG: rabbit, hare
Unihan extended: rabbit, hare