短语fly off the handle的意思是大发脾气，勃然大怒。
- When I told Dad I had crashed his car again he flew off the handle.
- Jane is trying to get to sleep, so if you wake her up she will fly off the handle.
值得注意的是，短语to get a handle on something的意思是理解、掌握某事。
- I don‘t like this new computer – I can‘t get a handle on the strange keyboard.