v. To remove clutter; to clean; to cause an area or container to contain fewer unnecessary objects or to contain them in a more aesthetically pleasing fashion.
"Could you sort through some of these papers for me? I'm trying to dejunkify these folders."
After smoking marijuana, or some dank, dedankifying is the process of ridding yourself of the smell, red eyes (usually with eye drops), and other signals that you were smoking marijuana. Dedankification is usually done by driving really fast with the windows down, chewing gum, and using eye drops such as rhotos or visine.
"Damn dude, we smelllike pot. We need to dedankify". or "Dedankification begin"!