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1.
when ur pretty dumb. my mom says this to me all the time.
Ur dumber than a box of rocks
-what?
shut up dumbass
by barbarino April 18, 2005

Words related to dumber than a box of rocks

dumb as a rock dumbness geology idiot igneous stupidity
 
2.
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 November 19, 2007