The act of ejaculating into your partner's mouth during oral sex, followed by tickling her or him (hopefully her, or else you're a gay) so much so that the ejaculate is expelled through the nostrils of the partner in much the same way that milk comes out of your nose when laughing.
I totally pulled a Nostrildamus on Christina Saturday night!
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Something you can smell before you see or hear it (e.g., shit, fire, dirty pussy, politicians, etc.) .
James’ inner nostrildamus knew when the pie was ready.

Suzy was such a nostrildamus for finding trouble.
by Goofnut June 3, 2021
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a coke head that can see into the future... and guess what he sees?
nostrildamus looks into the future and sees another line of coke.
by the half gram rapper March 12, 2011
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A girl or guy with an extremely large nose.
She has a hot ass, but is a definate "Nostrildamus!"
by Shawn Lyman January 20, 2005
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