chowder
Someone who thinks that they're the coolest dude on earth, but totally isn't.  They think that everyone's their best friend, they're hilarious, good looking, good at everythin, and generally not a failure at life.  THEY'RE WRONG'

ALSO

Someone who says "theywanna cock" (A clever play on words of the song "I wanna rock") and uses the phrases "That's what she said" and "Dude, listen" at totally inappropriate times.
Get out of here Chowder, nobody loves you and you'll die alone.