他开玩笑地用勺子轻轻敲了一下我的头。

He playfully ___bonked my head with a spoon.

他们约会几次后就发生了关系。

They ended up ___bonking after a few dates.

骑到山顶时，我完全没力气了，不得不休息。

When I reached the hilltop, I completely ___bonked and had to take a break.