Peeling a band aid off in one move.
Jumping in freezing cold water.
Telling your loved one you actually don’t like the food you’ve been pretending to like this whole time.

All of these situations call for ‘biting the bullet’.

There’s some speculation as to this phrase’s exact origins!
It’s said to have first surfaced in famous writer, Rudyard Kipling’s 1891 novel, The Light that Failed. But, other critics suggest it comes from an old medical practice of having patients clench down on a bullet before undergoing a medical procedure as a way to cope with pain in lieu of anesthetic.

Thank the gods for modern medicine, right?