A perfect person is somebody who gets on Urban Dictionary and insults others on Urban Dictionary who look up things such as "emo", "scene", "prep", etc.
These people choose to write very biased definitions that should simply not be taken under any consideration whatsoever.
They listen to plain boring music. A small mix, really. Bands that almost everybody likes. They wear plain clothing, have average hair, live in an average house, etc. They're boring and love to insult others' style.
Also, if there's a definition that they don't agree with, they put a thumbs down.
"I hate emo people. Since I'm a perfect person, I'm going to go write retarded definitions because I have nothing wrong with me."