An abstract object, most often encountered by randomly selecting them from urns.

Such urns typically also contain red balls, black balls, white balls, and yellow balls.

Used to hilarious effect in example problems written in probability textbooks, either by clever trolls or by well-meaning mathematicians who are hideously behind the times.
An urn contains 500 red, 1200 white, 300 yellow, and 600 blue balls. 430 balls are selected at random. What is the probability of selecting an even number of blue balls?

Ans: One, if you're at a LAN party or Star Trek convention.
by Trinadtsat Tomitsu December 31, 2012
blue balls is a form of power over men for women. when a woman feels that a man is not giving her the respect she deserves, that he has a small dick or is unattractive, that she wants revenge for whatever reason or is angry at the man, she will sexually arouse the man, but not give him the satisfaction of ejaculation. after a long time, this creates intense pain in his balls, and the woman can feel the sweet, sweet joy of power that women, in our culture, seldom feel over men.
"He was being an asshole and telling me that I would be a great notch in his belt. So I gave him blue balls... that should teach him to talk to women right!"
"Yeeaaah, girl!"

"He told me that he liked me best when I didn't talk, then said, 'Let's fuck.' He was small, too; why would I want to fuck that? I gave him blue balls instead. Haha selfish bastard."
by pakmafafmr April 08, 2009
When your girl gets you all worked up but doesnt fisish you off. Makes your balls hurt untill you make yourself (or pay a ho) cream.
Me and my girl were hard at it last night till that bitch blue balled me. But i needed a bicep workout anyway.
by Just another horny teenager March 11, 2009
The time i scribbled on my balls with a sharpie, that is blue balls.
Me- "MOMMMMMMMM!!!!! I HAVE BLUE BALLS AGAIN!!!"
Mom- "Ill get the turpentine..."
by Capn Ben December 20, 2005
What a tease considers as her trophey

what i LOVE to give my boyfriend (dont worry, i eventually relieve him, i just like to claim my trophy first
I'm known as a tease. I like to get a guy so goin then just stop and they get blue balls. SCORE!! another point for Beka
by BeKa February 03, 2005
the excruciating pain a man receives when his balls swell up because of a lack of sex. And when a man is sexually interacting and being "teased" his body will push semen towards the urethra but if not "relived" in a matter of time the semen will back up into the balls creating an excruciating pain, remember sperm is men't to go out not in!

in some cases a man can not just masturbate to fix this problem due to sexual frustration a man must be relaxed while another female (or male) relives him mentally and physically

NOTE TO ALL SPOUSES
NEVER EVER! EVER! let your man get this because of the amount of pain, NO MAN deserves this kind of torture.
(girl) rubs guys junk and starts to kiss him

(guy) gets hard

(girl) stops

(guy) blue balls comes into effect
by DR.Hall January 10, 2012
Blue ball is the excruciating pain felt in testicles.resemblance of pain include stomach aches or being horse kicked in the nads. You never want this feeling. So always bust a couple shells out of your shotgun before going hunting.
by trackkid_lewis February 17, 2014
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