Top Definition
Something that is so utterly absurd..it even qualifies for sheer stupidity and making an ass of someone or something. A mix between Ridiculous and Assinine (sp?) Can also be used as an exclamation for something funny or sarcastic. (depends on the inflection of voice and situation)
"I cannot believe what he said in that meeting...that's just Ridonkeyoulus (re-donke-you-lus)!"

OR

"That video was friggin Ridonkeyoulus (re-donke-you-lus)!"
by Long Range111 February 03, 2010
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