質問: 乳首と呼ばれるスポーク乳首はなぜですか? 誰かが用語「スポークニップル」の語源を知っていますか? スポークニップルのwikiページとGoogle でも答えはありません。 「ニップル」のようなねじ式機械ネジがありますか?あるいは、スポークホイールの終わりが一点で乳首に似ていましたか(例えば、木製のホイールの場合)?なぜ彼らは「乳首」と呼ばれていますか?
回答: Nipple. It's just a fun word used to describe 'protrusion'. Something that 'pokes' or 'sticks' out. A 'nipple' was a nipple before it was a body part. I believe a woman's 'nipple' have been called many things before people got used to the fact it was just an average body part all humans have (men included). That said, to demystify the word "nipple" & bring it's truth to light, look around and see just how many things actually have a 'protrusion' of some sort and consider it might have been called a nipple before it was named something else. Like, an "outty belly button" ...isn't that just a stomach nipple?