capper
/ˈkæpə(r)/noun
- N. Amer. informal a more surprising, upsetting, or entertaining event or situation than all others that have gone before〈北美, 非正式〉（吃惊、苦恼或愉快之事所达到的）顶点, 极点：
the capper was him accusing her of ripping off his car.
最令人吃惊的是他控告她偷了他的车。