A morbidly obese person who denies their obvious physical predicament. A delusional fat person playing at being skinny.
"Damn! That chick is wearing a mini skirt! It looks like a napkin on a rhino's ass... Serious repus niks complex, I'm afraid."
The guy that hogs the mic at the local pub's karaoke night. A casual singer who has delusions of greatness, but who's talent is yards short of the end zone.
"Dude, when is robeoke going to quit mauling those Beatles tunes? He's been straining his vocal cords and my patience for an hour!"