Top Definition
n - the act of sleepcrastinating; doing anything and everything within one's ability to put off sleep as long as possible.
Jason: Damn, you look dead. What happened?
Kelly: Ugh... I was sleepcrastinating hardcore last night. I got through the first two seasons of Popular Vampire Drama and read some books on faeries, but I don't remember any of it.
Jason: Your sleepcrastination has gotten outta hand, yo.
by SleepytimeFellow June 07, 2013

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