Prick is a vulgar word for 'penis' as well as a pejorative term used to refer to a despicable or contemptible individual. It is generally considered offensive, though in the past it has been used as a term of endearment. Its history as a euphemism for 'penis' goes back to the 1500s and has been used in wordplay by Shakespeare and other writers who have combined the vulgarism with the standard meaning of the noun, which means the act of piercing or puncturing. Most linguists believe it has been used as a direct insult only since 1929.