(bron: wikipedia)"Biting the bullet" is a metaphor which is used to describe a situation, often a debate, where one accepts an inevitable impending hardship or hard-to-refute point, and then endures the resulting pain with fortitude.
It has been suggested that it is derived historically from the practice of having a patient clench a bullet in their teeth as a way to cope with the pain of a surgical procedure without anesthetic. Evidence for biting a bullet rather than a leather strap... meer
