A stinky davis is when you find someone who is sleeping, then you pull down your pants, and put their nose in your ass crack. When said victim is about inhales, you release a fart which travels directly through the persons nose, often waking and/or alarming the victim.
"Dude I have an awesome idea. Jerry passed out early, and I really have to fart. I think I will give him a stinky davis."
by Punchy McAssface Jr. May 4, 2010