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1.
Nocturnesthesia

First manifest during the ritulistic defiance of human sleep patterns...

...so essentially at parties. Occurs often when, during the early hours of the morning, you experience an unusual level of perceptual and sensual clarity an in some cases enhancement.
"Penny for your thoughts?"
"Oh, just feeling the nocturnesthesia you know what I mean?"
by mcloud April 06, 2005