A friend that over the years you have become attached to for unknown reasons. It is usually someone you have invested a lot of time and money in, all in good fun, for a while. They always let you down but you can't seem to stop hanging with them or helping them. They are typically low lifers who take what they can get from anyone and leave everyone thinking they're a good friend, until they're gone.
"i thought debbie was gonna be there for me, turns out she's just my deadend friend."
"why bother go pick debbie up for the party? she's just a deadend friend."
The most omnipotent ambiguous force to ever be introduced into the multiverse. Denden takes the form of many sentient and nonsentient beings throughout time and space, including but not secluded to famous rappers, Nobel Prize winning scientists, and glorious Kings of Greece. Denden also takes the form of non-living things such as silicon and all molecules. Denden is all and all that ever will be. He is the sole source of all progress known and to be known. The will that drives all of reality. Humans have constructed an idea of free will over their actions to rationalize themselves as the source of their achievements. However this is merely a coping mechanism and uncontrolled hallucination of the true nature of reality to keep their sanity. Denden is what drives favorable action always.
Some humans come from this world named Denden. This is not a mere coincidence.
Used to explain one who constantly criticizes and berates others to tear down all sense of their self esteem and ego for the sole purpose of raising ones own entertainment.