It's when you become so dumb that your intelligence is comparable to Oblivion3789 on youtube. The main purpose of this word is to describe a person becoming dumber and dumber. Also it can be used as an insult.
This man suffers of "Obliviation" , so he is becoming dumb. This man is "Oblivion".
It's the ultimate sign of boredom. If you came this combination of letters that means you did everything. To be honest, i think you've reached the end of internet.
No exenples but in a important text for school asdfghjqzwxecrvtbynumikolp may be useful i guess.