Thick as Irish salt...too thick to melt snow.
Two brain cells but one on inhibitory mode.
He has the IQ of a lavvy brush.
If he had another brain cell it would be lonely.
A brain cell short of an amoeba.
If he had another brain cell he would be a half wit.
If brains were a disease he would be passed as A1.
If brains were elastic he wouldn't have enough to make a frogs jockstrap.
If brains were dynamite he wouldn't have enough to blow the wax out of his ears/enough to blow his cap off.
How will that do you Eric?
I am sure I have some more in my cranium, but the children are about to get in from school and they are expecting to have mugs of hot chocolate with marshmallow floaters.....