Top Definition
transformation in which ones nipple reacts with a decreasing temperature and becomes stiff, pointy, or more solid.
Erin:"Oh my god what is wrong with your chest!?!?!"
Damon:"WHAT?!?!Oh its nothing....just a nippert from all this snow."
Erin:"That thing could cut diamonds!"
by Damon a.k.a Erin's Man October 14, 2007

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