A dare; to challenge to do something requiring boldness and a slight lack of common sense, quite often ending in pain, discomfort, and hilarity. To decline, refuse or back down from a no-balls is an extreme act of cowardice.

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.

To have alot of money and nice things.

It's a dang ball you pervs ,nasty brain of yours there .Yeah I see what your thinkin

1. The testicles
2. A word to describe anger, forgetfullness, regret, dispair and many other emotions
3. A word usable in many expressions to express unwatingness
4. A childerens toy

Used as an interjection in the same way as "Crap!" or "Damn!" and even "God!"
Some people, such as myself, find it more humorous to use the word "balls" in place of harsher words.

A few examples:
1) Getting killed in Counter-Strike.
2) Upon discovering your expulsion from college.
3) Upon discovering that you have testicular cancer.
(okay maybe #3 could've been left out.)