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Dumber than a rock

A guy named Michael who acts like he knows everything and does stupid shit.
Michael: How do you spell "sexist"
Me: You're dumber than a rock
by 093707053 July 3, 2018
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dumber than dumb

Willfully refusing to use common sense and good judgement. Taking an already poor idea and taking it to the extreme.
On Halloween, Amber Langford and Annie Collinge acting, dumber than dumb, dressed up as exploding twin towers, without sympathy to the 2,977 victims of a terrorist attack at the World Trade Center in NYC on 9/11/2001 at Rosie's Club in Chester, UK. The costumes of the two girls featured the North and South Towers with paper representing fire and smoke protruding from the buildings which where made to appear as short mini-dresses.
by A pissed-off New Yorker November 11, 2013
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dumb and dumber

A movie, but not just any movie, produced in 1996 by New Line Home Entertainment that is 113 minutes of pure enjoyment. The plot line is a magical duo and their cross country trip to return a breifcase to its rightful owner. This movie is full of cooky mishaps, moronic confusion, and just pure hillarious-ness. An unrated version has recently been re-released with never before seen footage. This is unarguably the greatest movie of all time and has had fans as slaves since the day of the release. Should certainly be reguarded with the highest of standards, for it set the bar for every comedy movie to follow. Simply Brilliant.
Hey, have you seen Dumb and Dumber!?

Yeah man, of course! I pissed my pants twice!
by Excusemeflo x August 30, 2006
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dumber than a box of rocks

Phrase describing a person who lacks the collective intelligence of a box of rocks; possibly a bit more intelligent or a bit less intelligent than a person who is dumb as a rock.
John lit a match so he could see where the gas was leaking out; he's dumber than a box of rocks.
by Rocky Balbowa December 20, 2007
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dumber than shit

The absolute dumbest level a person can be. This person would score a negative number on an IQ test.
by MnB75 March 5, 2005
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Dumb and Dumber

Originally a 1994 comedy film about two imbeciles played by Jim Carrey and Jeff Daniels but now more commonly a popular nickname for the two Ukrainians working for the Mobster in Chief through his current fixer, Rudy Bananas.
Both Lev And Igor had a powerful reaction to the perceived cultural disparagement taking place when they were referred to as “Dumb and Dumber” by the American public.
by Dr Bunnygirl November 13, 2019
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