bite the biscuit

verb2

1. •
   To undertake an unpleasant task or to acknowledge an unfavorable situation or responsibility; bite the bullet.

   • Weibe, who fought the effects of allergy medicine and a winless streak since the Hardee's Golf Classic (1986), had to bite the biscuit and settle for second place. — 1999
2. •
   (slang) To die.

   • Trained assassins shoot people in the head, and that should be a relatively painless way to bite the biscuit. — 2007