Earliest print reference can be found in a 1908 book on magic by Ellis Stanyon. Magic, Volumes 5-7 can be found in the Library Of Congress Harry Houdini collection. It is really just a way to say something is especially ridiculous in a humourous way.
by Theguywithanawegeousgf August 21, 2021
Get the ridonkulousmug. by asspada August 10, 2018
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by S e r e n i t y November 5, 2016
Get the ridonkulousmug. by Dani Red June 13, 2020
Get the Ridonkulousmug. That ass is Ridonkulous
by Helpimstillbored June 1, 2021
Get the Ridonkulousmug.