Top Definition
Jasner: Verb; The act of spewing male ejaculate out ones nose due to laughter, usually following a well placed phrase or joke.
Right after I blew my sizable load in her mouth I shouted, "Breast milk!?" and I gave her a Jasner! Bringing my asner count to 3 this year!
by D-Train/Tido March 13, 2010

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