put (one's) lights out(redirected from putting someone's lights out)
put (one's) lights out
To render one unconscious with a punch. A: "Oh man, what happened?" B: "Well, you and Bart were fighting, and then Bart put your lights out." Wow, you're strong—you could put someone's lights out with a punch like that!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.