giving your all in a certain situation, being courageous
You should've seen me out there, I started to choke but then I went totally balls out.
by skrilla June 17, 2003
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Old timey terminology: on steam engines, they had steel balls in there that resricted steam flow. When the conductor was ready to pick up speed, he'd yell "Balls out!", signaling the help to do just that, thereby letting them haul some ass.
"Balls out! We got to mow down those hobos!"
by Dutch Grosse September 29, 2003
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When things get really tough or crazy, and one has to try harder to accomplish a goal.
Holy shit, the football team scored a point under a minute on the 4th quarter! The other team has no other choice but to go balls out, dude!
by Alphadestrious January 3, 2004
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Balls Out means many things. 1. Literal balls out of pants 2. No fear 3. Goin for it 100%
it's what we are. Steel Panther is Balls Out.

- Stix
by better than tessa September 5, 2011
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When playing beer pong and you miss the table with your shot. As punishment for this embarassing lack of ability the shooter must expose his balls until the next player takes his shot.

This is the real way to play, as opposed to the 'partner forgoes their shot' rule
John takes aim with his ping pong ball

John misses the cup arrangement and air balls over the table

Crowd yells "Balls out!"

John hangs more than just his head until the next shot is taken.
by SirLink49 March 5, 2010
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This is a serious condition that effects many athletes, it occurs when a sprinter wears very short shorts and then sprints. What happens is his nuts flap outside the shorts and are clearly visible to all. It is disgusting and must be prevented at all costs.
When Calin jumped long jump he always went balls out and never wore spandex underneath his shorts, hey it pays to advertise.
by ShoesRBad March 21, 2003
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