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A danish pastry entails putting one's nose right in your creviss (ass crack), and then farting whilst they breathe in. Best results are achieved when the other person is half asleep, thus shocking them into waking up.
Jordan: Duuuuude, I totally gave Nikki a danish pastry last night!

Alex: Sweeeet. Did you get her right up your creviss?

Jordan: Yeah, dude. RIGHT up.
by jayjay230 May 22, 2008