1. A Concise phrase, where the context of the matter doesn't need to be explained. Usually said to someone out of the loop/ not up to date/ is not aware.

2. Having knowledge or being aware of something especially through personal experience.

3. Street Smarts

4. Being Cognizant
Person 1:

What was that about?
What were they talking about?
Is that true?
How do you know THAT?
Person 2:

Don't worry about it. If you know, you know.
-
by LinguisticsOfTime March 18, 2020
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The defining phrase of an inside joke/access to information only a select few know about
You see your mate's laptop screen saver is a naked girl, but her face is covered , you know who it is, but others don't- you post it on your snapchat and put "....'s screensaver, if you know, you know"
by Resting peace August 29, 2015
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A way of agreeing or accepting something said.
Jimbob-"That kid is so salty that you kicked his ass!"
Steveo-"You know, you know..."
by Yeagermeister January 25, 2005
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A derogatory prepatory statement in a sentence used when telling someone something they should already know, but, in fact the author knows they do not.
As you know, gang leadership is run from the Prison Infrastructure.
by Marc Habel September 16, 2008
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An interjection, most often used when saying something the listener does not, and often could not reasonably, know.
There are 374,102 hairs on my head, you know.
by Anonymous May 25, 2004
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1. Substitution for something not to be said out loud.
2. Substitution for something that cannot be thought of at the present moment.
3. Question, literally meaning either
i. "Are you still listening?"
or ii. "Do you think you understand?" (informal)
1. - You want me to ... you know ... ?
- What, suck me off?
- Yeah.
2. - So I decided to give her that thing.
- What thing?
- The thing, you know.
3. - She didn't like the thing, so she dumped me. You know?
- Yeah.
by Pornocrasizzle December 18, 2003
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