That point in the day or event where you feel completely exhausted and cannot continue without the need of an adult beverage, the threat of constant complaining or the complete collapse of your will to live. A reference to the battery life of a cell phone.
After six hours of walking around Disneyland I was on my "last power bar", but I knew Space Mountain was all we had left so I powered thru the pain.
by Azrag February 22, 2014
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