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2.
The scientific term for a wet dream, ie: cumming in your sleep.
After dreaming about the girl who sat next to him at school, he woke up with cum all over his underwear. Just a nocturnal emission.
by La Nerdette October 29, 2010
 
1.
While you are sleeping, your mini-me decides to give his trumpet salute which leads to some unwanted secretion laying on your belly.
Man, I woke up to some unwanted spunk on my belly, man I hate nocturnal emissions...
by Buzzzzzzzzzz August 10, 2006
 
3.
A French television program usually found playing after the sun sets.
John had seen so many nocturnal emissions that he assumed himself an expert when producing his own.
by Michael Steamley May 22, 2008