Euphemism: For fearless, courageous, manly and sometimes foolish. Also, a form recognition of a daring feat.
Man jumping from a height, a person exclaimed, "Man, that guy has balls of steel."
by Offroadnutz June 24, 2015
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1. Definition of being strong, rude and super brave, and referencing the male balls because the harder they are, the manlier the man is.
2. Having your balls masked in steel, or having your balls made of steel.
1. Duke Nukem: I've got balls of Steel.

2. Dude: Hey you know what the "Balls of Steel" pill does in TBoI?
Other dude: i think it adds 2 soul hearts

3. Boy: I'll be asking the menacingly looking man's daughter out.
Other boy: Man, you've got Balls of Steel!
by Maxicat0 March 5, 2021
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Stainless Steel Drink Coolers for Whiskey, which profits go towards men's testicular cancer research., Balls of Steel.
by OriginalBOS November 28, 2012
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1.) A person completing a fearful goal.

2.) A man who has a silver covered testie.

3.) A man keeping his cool after being kicked, really hard, in the Balls
1.) Frank: "Did you hear what Trevor just did?"

Alex: "No, what?"

Frank: "He walked into a haunted house. yelled, "I think that ghosts are pussies!!! I have balls of steel!"

Alex: "What happened to him?"

Frank: "I don't know, he didn't come out."

2.) "You might not know this, but I have a ball of steel."

"Prove it"

"I'll walk through the metal detector, I bet you 40$ that it'll ring or go off."

3.) "Dan, you ok?"

"Yea, I've been kicked so many times in the balls, i have balls of steel."
by Royal_Defense710 July 12, 2014
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Louie tried to prove that he had balls of steel by entering the boxing ring without wearing a protective cup, but then ended up losing his ability to reproduce when his opponent violated the standard universal boxing rules and uppercut him REALLY hard in the groin. Damn, this guy should be felt sorry for! That shit must've hurt like a living hell!

Mark H. Urban Author since February 2004
by Mark H May 19, 2005
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Someone's balls that are so hard, that being kicked in the area doesn't affect him and he doesn't even feel it.
Maria: "OMG, I just heard John has some balls of steel"

Ashley: "I know! He let me play tennis on them last night."
by Gobama! December 31, 2009
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