It means "ridiculous", but it is much cooler, because "ridiculous" is so last year.
"There is no Cool Whip left."
"WHAT? That's ridonculous!"
by Squishy Wickham-Cool March 10, 2006
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Beyond the most extreme level of ridiculous. Sexy, strong, hot, interesting, athletic, fun, pretty much anything that is ridiculous, its good. Thus, it must be ridonculous.
"James is so ridonculous!"- said Judy.
"I know, he is pretty hot"-said Bianka.
by Juday April 29, 2006
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"Check out the hunk of blue cheese he's got on that wing."

"That's ridonculous!"
by Todd Benson March 2, 2004
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To transcend the ridiculous, a cross between the words 'ridiculous' and 'donkey' To denote something that is so ridiculous it's on the level of a jackass or the asinine.

A phrase that was coined by OBT of Markham, ON, Canada

Those who claim to have coined the term "Ridonculous" are just that...Ridonculous; as I have been using the term since '86 (for definition of "Since '86" please see "Since '86")
by OBT August 31, 2007
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