Although normally derogatory, Dank is sometimes used by
marijuana smokers to mean a good thing...as in that was "dank"
weed, aka strong potent, or sometimes, still wet. It has hence
spread to popular culture, to be applied to anything that is really
good.
I'm personally kind of annoyed by the term!
ON another note, I am look for a term, other than dank to mean
postively wet and humid. any ideas?