A person with a large ego, someone who thinks of themselves as perfect or god-like, and to be good at anything such as being funny, attractive, or just plain cool
This person is a huge douche, being so egotistical, and is prone to making fun of the mentally handicapped or uttering the phrase: "You have NOOOOOOO friends!!!" to any and all people which it dislikes
1."How was the party last night jack?"
"It was fun until some guy showed up and started being a huge demoss."
2. "I used to think he was cool until i found out that he was a demoss..."