Used to describe a rare condition in which a person is aroused sexually by the sight of a sleeping partner. A sufferer of severe narcophilia will be aroused even by the sight of a sleeping stranger and may attempt to copulate with the stranger.
(Compare with necrophiliac/necrophile.)
Last night I came home exhausted and collapsed in bed. Omar saw me sleeping and thought he could get some without waking me up. I always knew he was a douchebag, but now I think he may also be a narcophiliac!