Term used to describe an intense, or extreme situation.

Origin: In aviation, the throttles (or power levers) are usually sticks with ball shaped ends. When a pilot wants full power, he moves the throttle forward towards the front wall of the cockpit. Thus, "balls to the walls" meant "full power".
When Dr. Smith's patient suffered a cardiac arrest, the code team went balls to the walls.
by davechandler March 7, 2005
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Overconfidence in something.

Jack Pirogue made a bet in a bar in Cincinnati that he would make 2 of 3 darts into the double bullseye or his friends could mail his balls to the wall. He did not make the throws and had his ballsack cut off and nailed to the bar, coincidentally named Jack's. To this day if you go to the bar you can see a leathery dried up ballsack nailed to the wall.
Jack is crazy. He bet nailing his balls to the wall he could make that shot.
by GimpyMcGimpo May 30, 2020
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When you take a risk, or doing something that you normally would be not inclined to do; doing something dangerous some may see as foolish or 'crazy'; just doing 'it'
When crossing a busy street to meet his friends, Ian saw a truck coming at him at a high velocity, instead of stopping and waiting for the truck to pass by, Ian decided to go balls to the walls and cross the street anyway, impressing the friends he was trying to catch up with.
by Omega_Pirate December 27, 2006
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A better and more efficient way or say both "I swear to god" and "By the way" Basically it's a super phrase here to kick a** and take names.
Suzie: Babeeeeee take out the trasshhhhhh!
"Babe": Balls on the walls Suzie I'm five seconds away from leaving you for your hotter sister.

Chuck: Dude! Balls on the walls your shoes are fabulous.
"Dude": Because you said it like that it made me secure with my choice to be your friend and I now feel like I am overall a better person for being in your presence. I love you.
by Lindseythinksthiswillspread August 1, 2011
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It's all or nothing. There is not turning back. Reach down, dig for the biggest pair you can find, and go!
Okay Ted, there are close to 15 guys behind those hedges, and two of us. Balls to the wall time. Lets go.
by Regainer May 16, 2011
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When you are having sexual intercourse and your fully penetrating the Vagina and your balls are hitting "the wall" or the woman's ass.
Man I heard Jacob went balls to the wall with that chick from the bar last night.
by The Aloha Snake January 16, 2014
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Giving it your all, no matter the cost. Usually involves physical activity resulting in extreme exursion.
"I'm going balls to the walls for my next biking trip. It's uphill, both ways. Balls to the walls!!!"
by Ms. Nun November 20, 2015
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