English is rich with clinical, silly, and sometimes filthy words for our naughty bits and the things we do with them. But when did words like "fart," "prick," "spunk," and "moon" enter the English language?
Lapham's Quarterly put together this chart of words for body parts and bodily functions dealing with the butt and genitalia, with dates of first use according to the Oxford English Dictionary. It's not nearly as comprehensive as Jonathon Green's incredible slang charts, but it's neat as a quick reference for penis, vagina, and ass-related English. Click the "Expand" button on the image to see it in its full glory.