When getting head from a girl, you push her head down on your dick and cum so that it comes out her nose as if she were a dragon snorting smoke out
I was getting head last night but I didn't really like the girl so I gave that bitch a dirty dragon
by Derek July 27, 2006
a sexual move whereby someone bare-ass farts in your mouth and then you blow it lightly on their nose so they smell it.
Evan and Margoliner did a dirty dragon.

Dude! I dont wanna hear about that...
by iGetHigh November 06, 2007

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