Top Definition
When you need a nap really bad, but don't have time -- so you consume caffeine and/or energy drinks, postponing the nap. This incurs nap debt, which will have to be repaid later in the day with interest.
A: I'm really tired, I should take a nap but I have a meeting in 10 minutes
B: Just grab a red bull!
A: ugh, I don't want to incur more nap debt, it'll kill my afternoon
by omgsrsIcantbelieveyourequireit December 18, 2013

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