<P> Goose bumps (also known as goose pimples in the UK) are the bumps on a person's skin at the base of body hairs which may involuntarily develop when a person is cold or experiences strong emotions such as fear, euphoria or sexual arousal . </P> <P> The formation of goose bumps in humans under stress is considered to be a vestigial reflex; and its function in other apes is to raise the body's hair, and would have made our human ancestors appear larger to scare off predators or to increase the amount of air trapped in the fur to make it more insulating . The reflex of producing goose bumps is known as piloerection or the pilomotor reflex . It occurs in many mammals besides humans; a prominent example is porcupines, which raise their quills when threatened, or sea otters when they encounter sharks or other predators . </P> <P> The phrase "goose bumps" derives from the phenomenon's association with goose skin . Goose feathers grow from stores in the epidermis which resemble human hair follicles . When a goose's feathers are plucked, its skin has protrusions where the feathers were, and these bumps are what the human phenomenon resembles . </P> <P> It is not clear why the particular fowl, goose, was chosen in English, as most other birds share this same anatomical feature . Some authors have applied "goosebumps" to the symptoms of sexually - transmitted diseases . "Bitten by a Winchester goose" was a common euphemism for having contracted syphilis in the 16th century . "Winchester geese" was the nickname for the prostitutes of Southern London, licensed by the Bishop of Winchester in the area around his London palace . </P>

Where did the saying goose bumps come from
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