bonk

Etymology

Of imitative origin. Compare English bang, bounce, bump.

verb

1. (informal) To strike or collide with something.
2. (informal, chiefly UK, transitive, intransitive) To have sexual intercourse (with).
   Sophie (Katrin Cartlidge) What is a proper relationship? / Louise (Lesley Sharp): Living with someone who talks to you after they've bonked ya. 1993, Mike Leigh, Naked
   Because most of the blokes I fancy think l'm stupid and pointless—and, so, they just bonk me and then leave me. And the kind of blokes that do fancy me, I think are drips. I can't even be bothered to bonk them. Which does sort of leave me a bit nowhere. 1994, Richard Curtis, Four Weddings and a Funeral, spoken by Scarlett (Charlotte Coleman)
   But let’s not kid ourselves about bonking for Britain: this is just “the great replacement theory” with a tax code. 2022-10-10, Zoe Williams, “The Tory minister’s ‘bonking for Britain’ idea is a vile vision lurking behind cheeky Carry On imagery”, in The Guardian
3. (skateboarding, snowboarding) To hit something with the front of the board, especially in midair.
4. (informal, sports) To experience sudden and severe fatigue in an endurance sports event due to glycogen depletion.
   I had eaten five of my six PowerBars. I was exhausted and famished. In cycling they describe what was happening to me as bonking: my body was out of fuel and had no more energy. 2004, Gary Erickson, Lois Ann Lorentzen, Raising the Bar, Jossey-Bass, page 29

noun

1. (informal, countable) A bump on the head.
2. (informal, countable) Any minor collision or blow.
3. (informal, countable, chiefly UK) An act of sexual intercourse.
4. (informal, uncountable) A condition of sudden, severe fatigue in an endurance sports event caused by glycogen depletion.
5. (countable) An animal call resembling "bonk", such as the call of the pobblebonk.