when a person who is viewing a word on Urban Dictionary gives it a thumbs down for one of three illegitimate reasons;
1. They believe that a lexical definition is only proficient if it doesn't point out some sort of flaw in their character.
2. They feel a sense of unwarranted accomplishment by giving a good definition it's first thumbs down.
3. They were insulted by me pointing out their illogical and childish behavior and feel they can retaliate by giving this definition a thumbs down when really it will just prove my point.
Marty, upon realizing that he was a classified as a standard Diction-Downer, decided to give the definition a thumbs down out of incorrigible fury.