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 3, 2006
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Dude, you must have some major balls to fuck that shit
by Kevin December 8, 2002
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Definition #1: the centre of a man's life

Definition #2: bravery

Definition #3: authority
Definition #1: My balls itch.

Definition #2: We all went to Skatopia to skate the biggest ramp, but Jake was the only one with the balls to do it.

Defintion #3: Dude, what kind of balls do you have to flip me off, huh?!?
by DamianRules123 May 23, 2007
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"Balls!" cried the queen. "If I had too (two), I could be king."

The king laughed. Not because he wanted to, but because he had too (two).
by Ratfish February 24, 2008
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Objects that are inert.
Piccolo: It doesn't make a bit of difference guys, Dende's gone remember? The balls are inert.

Trunks: Does that mean they don't work?

Piccolo: Yes, but I think *repeat first quote*
by minhimalist May 14, 2008
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To an extreme degree, especially with regard to temperature. Likely derives from the phrase "cold enough to freeze the balls off a brass monkey," which itself dates back to the 19th century.
by swiftlamb January 7, 2015
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Usually used to refer to the genitals of a man, also known as testicles. (the pouch) This term as been used to describe frustration, happiness, or can even be used as an adjective.
Yo son, she licked my balls"..."What we have a test?! BALLS!"..."Man that ride was crazy balls
by Drizzy "basedgod" Dan..."Swag" February 10, 2011
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