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The term is commonly used at the end of a statement, primarily to emphasize the factual basis of said statement.

It can also be used to educate others of your self-importance or emphasize others' faults.

The term was popularized by Allison Dubois on an episode of the reality show "The Real Housewives of Beverly Hills - Dinner Party from Hell."
Allison: "I have books written on me and by me and television shows based on my life so you can just take a flying leap. Know that."

-or-

Jason: "You're an uneducated silly bitch. Know that."
Know That by fobulouswon March 3, 2011
Used when you want to say you agree with someone. Just a shortened 'you know it'. But know it doesn't sound as good :) Also spelled kno: tht, dat & dhat. or know: tht, dat & dhat. Pronounced "know dat"
Tyrone: Corey's girl got him on lock, he stay with her all day, every day.

Tori: Mhmm, know that. she won't let him go.
Know that by Tori-<3 November 7, 2010
to acknowledge ones words or actions, or to inform someone of their new discoveries
Michael-Did you really give her the Angry Dragon?
Ty-Know That!
Know That by thetyty December 14, 2010

Did you know that there's a tunnel under Ocean Blvd 

The ridiculously long name of Lana Del Rey's upcoming 9th studio album, out March 10, 2023.
Stream Lana's new song Did you know that there's a tunnel under Ocean Blvd!

You Know That, Right? 

A phrase that can be added on to the end of a statement to make it sound obvious-- implying that the other person is stupid if they didn't know the statement.
Frenemy: So, have you kicked him out yet?
Anne: No...?
Frenemy: What are you waiting for? He'll never change.
Anne: I'm not sure wha--
Frenemy: He's cheating on you, you know that, right?
Anne: Oh! Uh... yeah... I...I uh totally knew that...*cough cough*

I Know That's Right 

When you know exactly what someone is saying.
Man I'll be single forever, people play too much!
I know that's right, that's why I'm single too!
More from Urban Dictionary

kinktober 

An excuse for people to write porn with different types of kinks throughout the month of October.

Smut Fanfiction
That chick doesn't write often but when she does, its for Kinktober.
kinktober by Kinkiest July 12, 2018
Word of the Day on October 30, 2026

proper lad 

a lad that is such a lad that he is a proper lad
person1:did you see bob
person2: ya he was a proper lad
Word of the Day on October 29, 2026
The number of years you are still sexually active
While our lifespan is the number of years we will live, our healthspan is the number of healthy years we will have and our sexspan is is the number of years we will continue to be healthy enough to continue having an active sex life.
sexspan by Dr Kat April 21, 2022
Word of the Day on October 28, 2026
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