someone who actually believes everything that they read on Urban Dictionary as the spoken word - as in their name being defined as a great, fabulous person everyone loves...
Someone who posts definitions on Urban Dictionary.
Oftentimes, unfortunately, term applies to internet preteens who think it is amusing to type in their illegible chatspeak and insult peoples mothers. They also attempt to use ghettospeak in with their chatspeak, making it illegible to the nth degree.