Top Definition
To fall asleep while performing oral sex on a woman.
I was so drunk last night that I suffered an attack of narcolingus while dining at the y.
by kitchenwarehelmet August 06, 2009
Falling asleep while performing cunnilingus.
You remember Friday night when Gary was going down on that chick and passed out half-way through? A clear cut case of narcolingus if I've ever seen one.
by Crayon73 October 04, 2010

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