"A collection of insults 32" joke

Has all her bricks, but no cement holding them together.

Has an inferiority complex, but not a very good one.

Has an IQ one lower than it takes to grunt.

Has change for a seven dollar bill.

Has FINO (first in never out) memory.

Has his brain on cruise control again.

Has his solar panels aimed at the moon.

Has it floored in neutral.

Has no discretionary intellect.

Has no upper stage.

Has nothing to say, but delights in saying it.

Has only one chopstick in the chowmein.

Has resonance where others have brains.

Has signs on both ears saying "Space for Rent".

Has so few thoughts that when he free associates, it's like watching tennis.