An airplane throttle, or power lever, is a type of stick with a ball-shaped topper positioned behind the cockpit's firewall, similar to how a regular passenger vehicle's gearshift is often positioned behind the vehicle's dashboard. The throttle controls the airplane's power level by controlling how much air or air/fuel mixture the cylinders receive. The closer to the firewall the pilot pushes the throttle, the more power the airplane has. When a pilot wants full power, he pushes the throttle all the way forward, toward the firewall. Therefore, when pilots push their throttles all the way forward to achieve full power, they are said to have pushed the balls to the walls. There are a lot of poor answers out there, so you are welcome for offering this great one.
well, there are two balls in a sac so...
Accept
walk thru walls,999 balls,999 stuff like that
Once cannons became along, the castle walls were unable to withstand a bombardment of cannon balls.
lick balls to the walls
AC/DC did not record Balls to the Wall. It was by a German band called Accept.
"Balls" is a slang term for testicles. This is a very rude exclamation.
claustrophobia
They come from India.
tennis balls usually come in the colour of bright yellow. it's basically the usual color tennis balls are seen as.
jezzball
it means you have big balls+ it means you have big balls+