The word dadis can be used as either an adjective or a noun. It was originally intended to replace the simple phrase "do this". However, as time passed the word was expanded to mean marijuana or any other highly pleasurable substance. In its shortened form da is another word for friend, buddy, or comrade. If you're in an extra risky mood or you just want to spice it up a bit you can use dikida for enhanced effect.
After a hard day of work, John returns home to his dank stash of dadis and hooks up his favorite da.
Hook me up with some phat dadis,yo.