When you knock someone out with one punch, and one punch only. Usually to the face or neck.
That kid was talkin' so much shit, everyone thought he would kick the other kids' ass. Then he got one punched and was out for 4 hours.
by MBizzle April 26, 2007
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a similar word in deffination to "pink mist", in wich one hits so hard it only takes a single punch to achive victory. This is most common found in tall lankey men who have long arms and awesome silver cars.
hey did you see that guy driving that cavalier? ya that was one-punch!
by shfeddy January 28, 2011
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A bald guy who can kill you in one punch
ONE PUUUUUUNCH
*The One Punch Man intro "The Hero" of JAM Project sounds in the backround*
by Nyckboy April 3, 2016
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Is defined One Punch Man a Hero for Fun who is called "Saitama". He can defeat every single foe with a punch. Just one. Not more. Nothing else. Just one fucking punch.
Has the new One Punch Man episode been released?

HELL YEA! IT'S AWESOME!!
by OneFuckMan December 20, 2015
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A manga that, despite being out since 2009, is only becoming popular now. Like, REALLY popular.
I'm gonna read some one punch man!
by M'Definition December 15, 2015
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The coolest hero ever!!!!
One Punch Man can kill anybody with only One Punch! check out the anime
by ₩¥°¿¡ February 19, 2016
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A bald guy named Saitama, who is a hero for fun and he can technically kill people, aliens or whatever he's fighting with - like the car alien- with one punch. He has a "student" named Genos and he's a cyborg, they applied for the hero association and their names are "Bald Cape" and "Demon Cyborg"

It's a very awesome, lit, funny anime so you should watch it.
How to be One Punch Man 101:
"100 push-ups, 100 sit-ups, and 10 km run EVERY DAY
by TheDicer44 May 29, 2019
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