To get knocked out in a devastating fashion, which makes you seemingly disappear off the face of the Earth in embarrassment; before the knockout you were cocky, disrespectful, and you thought your were invincible.
That fighter is too cocky and disrespectful, I hope he gets Ronda Rousey'ed in his nextfight!
The act in when you get kicked in the lower jaw, resulting in you getting KO'd by your opponent. A side effect may include a look of disarray in the face.
Dude 1: Hey, man... watch your kicks!
Dude 2: Sorry, Bro.
Dude 1: Yeah, man. I'm not trying to get Ronda Rousey'd
When you find yourself so aroused that your ejaculate (cum) shoots out your penis at such a high velocity that when it hit you you are rendered unconscious.
Matt: "Dude you look like shit"
Jerome: "I was a-ronda-roused so bad last night.....by multiple dudes"