bonk

To hit or strike; to collide with something.

Please let it be the cow. No such luck, The 'cow' picked up my big brass telescope and bonked me on the head with it.

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.

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.

To hit something with the front of the board, especially in midair.

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.

A bump on the head.

Any minor collision or blow.

An act of sexual intercourse.

“[…] It’s not like I’m just looking for a bonk, is it? This is something a bit different.” ¶ “Quite,” said Nick—though bonk was a troublingly casual way of referring to something which preoccupied him so much.

A condition of sudden, severe fatigue in an endurance sports event caused by glycogen depletion.

An animal call resembling "bonk", such as the call of the pobblebonk.

A surname.