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tiredness or lethargy, brought about by one's inability to remember to sleep. Forgetting to sleep.
I got so wrapped up in Urban Dictionary that I wound up with a case of insomnesia.
by wordjunkie11 March 05, 2011
A state of insomnia, lending towards an episode of such wild partying that, the day afterwards, you have a mild case of amnesia (i.e. forgetting some or most of what happened).
The morning following the nearly 10-hour soca party, Jexdon had a mad case of insomnesia.
by DarkKnight1971 June 26, 2012