Barbie Knockout 

The most iconic + popular group chat on Stan Twitter ran by @slimeybarbie. The cause of many viral Twitter scandals and hit tweets. Founded in June 2020.

“omg did you see how barbie knockout raided those group chats last night?”

—
“omg cupcakke is really an active member of barbie knockout.”

—
“barbie knockout outsold whalenation.”

Barbie Knockout by imagintears October 16, 2020

Knockout Machine 

An MMA fighter who earns all of his wins with a knockout, or with a TKO, or a referee stoppage. Examples include Chuck Liddell and Thiago Silva.

Thiago Silva showed us why they call him "The Knockout Machine" in his fight with Keith Jardine.

Knockout Machine by Phenomenal1 September 19, 2009

Knuckle Cheese Knockout 

When a man cums on his fist, and punches his sexual partner in the face.

Dude, Jen told me she cheated on me, so during our break up sex, I gave her a knuckle cheese knockout and stole her purse.

Knuckle Cheese Knockout by Jizzsaw April 1, 2009

TFP Knockout 

The sexiest creature to exist. The only one who can come close (but not close enough) is TFP Starscream

Me:I know I don't care about looks, but have you seen TFP Knockout, the sexiest creature to exist?!

TFP Knockout by NightmareFoxy117YT November 10, 2019

Dick Knockout 

To be hit very hard in the face with a phallus. This action leads to a knockout and most of the time a memory loss.

- L: How was your night yesterday with QP ?
- U: Well, I'm not sure.. I can't really remember.
- L: He probably did a "dick knockout" !

Dick Knockout by TheRealButcher July 6, 2015

knockout 

1. A very attractive woman. So named because her attractiveness is so stunning that it can (figuratively) knock you out. (make you speechless, stutter, etc.) Hence the term "knockout."
2. A punch in boxing that knocks your opponent unconscious, typically ending the match.

Guy1: Wow check her out!
Guy2: Yep, she's a knockout all right.

knockout by GMG1 February 6, 2008

Netflix and knockout 

When you clap cheeks so hard and the person taking it hit there head hard enough off the headboard that they become unconscious, all the while there's Netflix playing in the background

John: I clapped cheeks so hard that instead of Netflix and chilling it became Netflix and knockout.

Netflix and knockout by Alex's D May 10, 2018