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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

square grouper

Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."
square grouper by slipsheet November 6, 2004
Word of the Day on October 7, 2026
A girl who does ballet and only talks about ballet. Her schedule is filled with dance classes which does not allow her to do any other activity.
"Hey, do you know that girl Sally?"

"Yeah, she's kind of annoying. All she ever talks about it ballet."

"Wow, what a Bunhead."

"Hey Sally, you want to hang out this weekend?"
"I can't, I have dance."
"You're such a Bunhead."

"Yeah... I know."
Bunhead by Jen00 October 24, 2014
Word of the Day on October 6, 2026

trucker's tan 

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.
Word of the Day on October 5, 2026
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