When someone is just being too dumb to be called a dummy so you have to call them a dimmy.

(Originated in pennfield choir)
She's being such a dimmy
by Skittles1157 August 11, 2017
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A sequence of "fake outs" as a hockey player skates towards the net.
(Man watching hockey game):"OHHHH check out those dimmy dangs!"
by anonyms :D December 23, 2009
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Who's Dimmy?
He shall go down in books as the greatest man who nobody knew....
by Bewvbf September 24, 2017
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