Nine Nasty Words English in the Gutter: Then, Now, and Forever by John McWhorter
Profanity has always been a deliciously vibrant part of our lexicon, an integral part of being human. In fact, our ability to curse comes from a different part of the brain than other parts of speech–the urgency with which we say “f&*k!” is instead related to the instinct that tells us to flee from danger.