you know something?

Idioms  

1. Also, you know what? Listen to what I'm going to tell you, as in You know something? He's always hated spicy food, or You know what? They're not getting married after all. Both these colloquial expressions are shortenings (Of Do you know something? or Do you know what?) and are used to emphasize the following statement or to introduce a surprising fact or comment. The first dates from the mid-1900s. The variant, from the late 1800s, should not be confused with what do you know or you know.

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Example Sentences

"It might have taken us 33 years but you know something - we finally got there."

From BBC • Dec. 31, 2025

I sometimes substitute, you know, something that I can’t relate to with other things, as my own process.

From Los Angeles Times • Dec. 11, 2025

“Before we start the show, I want to let you know something that I found out just last night,” intoned the veteran comedian.

From Slate • Jul. 18, 2025

You've got this very pure sensation that you know something and that feeling that you know something is metacognitive.

From Salon • Oct. 15, 2023

"Jeez—touchy, touchy. It's a compliment. I mean you could probably sound like you know something, and I'm just gonna to sound like this dumb kid, that's all. So, will you do it?"

From "Things Not Seen" by Andrew Clements