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1 definition by sdevlina

 
1.
An accidental nap, usually in the mid afternoon, often lasting into the early evening hours and usually resulting in disorientation upon waking.

After a napcident, one may be confused about what day and time it is as well as where they are located.
"I'm so sorry I'm late, I'm on my way now - I had a napcident!"
by sdevlina January 17, 2012