dumb as rocks
Referring to someone that has no intelligence. No common sense. Someone who is just dumb, as rocks have no intelligence.dumb rocks
Dumb ass a rock
Dumb as a rock combined with asshole and increased stupidity.
Most of people of this category do not understand the difference between Dumb as a rock and Dumb ass a rock
Most of people of this category do not understand the difference between Dumb as a rock and Dumb ass a rock