Top Definition
When you're supposed to sleep for 20 minutes and end up sleeping for 2 hours or more. In stead of feeling refreshed, you feel completely tapped of energy and you have the breath of a horse six days dead.
I was going to take a powernap this afternoon, but when I woke up 3 hours later with a awful taste in my mouth I figured I'd taken a powertap instead.
by Agerton September 22, 2010
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