Before the invention of boxing gloves, fist fights were carried out with unprotected hands. A very brutal attraction in pubs and on fun fairs. At the moment bareknuckle fighting experiences a renaissance.
But why name a peaceful thing like a pipe after such a martial sport?
Even the most peacful of people have to be able to show their teeth from time to time, if the situation calls for it. But it is best to let the bare knuckling happen in your head, and after the anger and aggression is gone, one can defeat the opponent with wit and strategy.