go out like a light

go out like a light

To fall asleep quickly. I didn't even hear you come in last night—I was so tired that I went out like a light as soon as my head hit the pillow. A: "OK, I put the baby down, and she went out like a light." B: "Wow, you must have the magic touch!" I'm an insomniac and my husband always goes out like a light—it's so annoying.

See also: go, light, like, out

Farlex Dictionary of Idioms. © 2024 Farlex, Inc, all rights reserved.

go out like a light

fall asleep or lose consciousness suddenly. informal

See also: go, light, like, out

Farlex Partner Idioms Dictionary © Farlex 2017

be/go out like a ˈlight

(informal) fall asleep very quickly or suddenly lose consciousness: She went out like a light after an exhausting day at work. ♢ One minute she was talking and laughing and the next minute she was out like a light. It was very frightening.

See also: go, light, like, out

Farlex Partner Idioms Dictionary © Farlex 2017