Cork slang. Depending on the context means "Go on ahead"/"keep going" or "well spotted" Very much a northside version, so uttering this phrase while wearing a tracksuit adds gravity to your statement.
Chap one: "I say, would you care to indulge in a beverage with me?"
Chap two: "Nah, boy. I'm going out with the oul doll. Ball on."

Chap one: "Oh dear. There appears to be a group of drunken lingerie models in the corner who are attracted to men with buzzcuts and homemade indian ink tattoos over there!"
Chap two: "Wha?!? BALL ON!!!"
by Gaz Edmunds October 03, 2006
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the correct abbreviation for "eyeballs" as opposed to the common mistake of using "eyes"
Teacher: Now students, I want your balls on me.
*students continue talking*
Teacher: No talking! Put your balls on my face right now!


Tom: ah, its so bright outside
Paul: yeah, the sun is right in my balls!


Gage: My eyelid's are gone!
Paul: that means your balls will be showing all the time!
by darksideofthepaul July 10, 2008
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More popular in the UK, this phrase is used to show disgust or apathy towards something, represented by the 'it'. Similar to fuck it or screw it in the US.
Person 1: Shouldn't we pick up our garbage?
Person 2: Balls to it.

They leave the garbage.
by Ambrosius February 22, 2011
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These are the saggy, sweaty, smelly gods of the male genitals.

Apart from the penis, the balls are the most exciting thing you could have near, on or in your face. They taste and feel like a piece of heaven.
"I feel like I have died and gone to balls."
by BizT December 20, 2007
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Can be used in place of Fuck, shit,crap or damnit to express anger, disappointment, disgust, etc.
Teacher: "Alright kids, time for a pop quiz."
Billy: "BALLS!!!"

"Sarah's a terrible cook, her meatloaf tasted like balls"
by J Rock March 23, 2005
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A less obscene way of saying, "fuck that". An expression of laziness and lack of enthusiasm/interest to do what is asked.
"Stop lazing about and do some god damn work!"

"...Balls to that."
by Dedguy August 01, 2009
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meaning in a lot. as in up to one's balls.
J: guys wanna pre at my place tomorrow???
H: yes Jeff, I'm in!
B: And I'm in too Jeff
F: balls in!
by kickup_thefire November 20, 2014
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