when a guy gives a girl so much pleasure that she faints. it is one of the hardest sexual feats to do.
I gave my girl the knockout cause i was just that good at the sex.
by Dj the dl September 24, 2009
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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.

by GMG1 January 2, 2008
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This is a girl who is beautiful with or without makeup. Most are high matinence but doesn't mean all of them will be. She has it all, beauty and brains.

Also know as: Knockout Beauty.
I like dat chick right there! She's a knockout.
by Mon-Mon August 13, 2007
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Knockout is a forum that sprung from the remains of Facepunch in early 2018, and has since eclipsed Facepunch tenfold to become a seething hive of degeneracy with fetishes that would make /b/ scream in horror before reaching for the bleach.

Most of Knockout's demographic are thirty-something year olds who were hot stuff when Facepunch hit its prime in late 2010, and are now stuck whining about how they wasted all their life experiences by being shut-ins in their mother's basements or boozing for years but can't work up the will to either stop posting or administer nine grams of lead to their brain.

When Knockouters aren't busy explaining their fucked up fetishes, torrenting child porn, or treating tiny pixels next to their names like Viagra for their penises irl, they spend their days like ResetERA does: whining about anything that doesn't fit the social justice definition, whining about representation, whining about how no one takes them seriously, and whining at each other like the bitches they are, but if you try to point out that their lives are worthless and that they have better things to get upset over, they will cry like pussies and bombard you with "Dumb" ratings. Meanwhile you can get banned for not going along with the community or whenever the jannies wish.

Knockout is hell.
Rick: Dude, what the fuck? Some idiot on a forum just told me that he watched CP and fapped to it.
Dave: Oh, what site was this?
Rick: Knockout, of course.

Inacio: I know, I'll make a forum to replace Facepunch!
Creepy Knockout members: Can we join too...
Inacio: Yeah, sure, come in- OH SWEET JESUS FUCK
by /b/leach_my_eyes April 26, 2021
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Chugging an entire beer while the bottle fills with smoke, then inhaling the smoke.
Guy: "Got some beers, wanna use the knockout?"
Dude:"Fuck yeah, hook me up!"
by Outer Exos May 5, 2013
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a. A musical quartet of the Power Pop/Mod/Punk Pop genre that can successfully deliver roundhouses to the face of Chuck Norris
b. A group of well dressed ninja warrior musical geniuses

a synonym for "Fuckin' sweet, homie!"
Wow, I thought Chuck Norris was immune to roundhouses to the face! Now that I've seen The Knockouts in action, I know otherwise...

Damn Mildred, your tits is The Knockouts!
by Badass Punk April 19, 2006
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a basketball game where one person shoots a free throw/three pointer and if he misses he must chase his ball and make any shot before the person behind him makes a shot.
I can't shoot so he beat me in knockout.
by ben renner June 22, 2005
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