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 19, 2005
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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 20, 2007
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When being compared to a box of rocks would be an insult to rocks everywhere.

When being compared to retards would be an insult to retards everywhere.
Dude, you are dumber than a box of retarded rocks.
by RabbiRob July 3, 2006
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Anyone who needs this definition. I mean, it’s stated in the name. Dumber than a box of rocks refers to people who are cocky, but extremely dumb.
“How many planets in our solar system are there?”
“I think like… 17? Yeah.”
Holy crap, they’re dumber than a box of rocks!”
by EmoMediocreBoi April 19, 2022
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