2) An incredibly moronic girl on the Linkin Park Message Board, who doesn't cease to show her idiocy.
3) To commit an act more stupid or equally as stupid as the person in definition #2.
2.) Holy shit, lil' Johnny! Did you see that? Carouselp didn't know what the hell an understatement was! What a fucking moron!
3.) Hey look! Dan just pulled a Carouselp and made a total dense ass out of himself.