Common misspelling of the word dummy, almost always used by the people who can easily be described by the word itself. Just because dumb has a "b" at the end, does not mean dummy has to. Also, dummy does not rhyme with Gumby.
by Crunk Dizzle September 21, 2008
Get the dumbymug. by theceo_ofswag77 November 16, 2019
Get the dumbymug. joe wilson is a dumby because he had a chance to date the hottest/nicest girl in school, but he blew it because he is a dumby
by jayfelice December 23, 2003
Get the dumbymug. by $tefen September 2, 2006
Get the dumbymug.
Get the dumbymug. by KissTheStars December 9, 2008
Get the dumbymug.