Origins: the adjective root, ridonkulous, evolved from the ithyphallic wordplay of replacing the "dic{k}" sound in ri·dic·u·lous with "dong" (the "g" becoming silent). The spelling of the root using a "k" instead of a "c" results from the common misconception that the word donkey is somehow related.
Also known as "the grade eight word", is the epic combination of five non-dictionary words, plus the optional prefix of "Epic" that are used quite frequently by people in today's society, more often teenagers. It's nickname ("The Grade Eight Word") originates from the location it was coined, a grade eight classroom. When someone thoroughly and utterly triumphs over the competition, this can be referred to as Epic LegitUber Redonkulous Noob Pwnage.
We totally owned the other team! this has been a severe case of Epic LegitUberRedonkulous Noob Pwnage.