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1. To commit suicide. Once John realized he had begun to have thoughts of killing himself, he decided to seek help.
2. To bring about one's death by performing a particular action. This phrase can be said when one's life is or could be in danger, but it is often used hyperbolically. I can hardly breathe—I'm going to kill myself if I go back on the treadmill right now! If they try driving home in this snow, they'll kill themselves—tell them to get a hotel room for the night.
3. To overexert oneself. I know you want to get the report done tonight, but don't kill yourself—it's not even due until next week! They're killing themselves finishing the last touches on the exterior of the house before the storm hits us.
kill (oneself) (doing something)
To overexert oneself or overextend one's effort while doing something. Don't kill yourself trying to get the report done tonight—it's not due until next week anyway. They're killing themselves finishing the last touches on the exterior of the house before the storm hits us.
kill (oneself) laughing
To laugh hysterically and uncontrollably. The comedian had the whole audience killing themselves laughing. My ribs actually hurt from it! I was surprised by how funny my date was last night. I was killing myself laughing at some of her stories!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
ˈkill yourself (ˈlaughing)(British English, informal) laugh a lot: It was a very funny video. We killed ourselves laughing from beginning to end. ♢ He just stood there, killing himself laughing.
Farlex Partner Idioms Dictionary © Farlex 2017