another word for geek/nerd/dork. can also be used to describe douche canoes and ppl u don't like. originating from Malcolm in the Middle, it is a derogatory term for the kids in the gifted class, also known as krelboyne class.
"hey i bought a pack of magic the gathering cards yesterday, wanna check them out?"
"magic the gathering? god, dude, ur such a krelboyne."