What is Nostrildamus?
1.
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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2.
A girl or guy with an extremely large nose.
She has a hot ass, but is a definate "Nostrildamus!"