He ain’t right!

[GmpaJim]

The famous:
He’s 1/2 bubble off

 

[GmpaJim]

He’s not hittin on all cylinders
His elevator doesn’t go to the top floor
He‘s a quart low
He’s mowin with a dull blade
Dumb as a bag of hammers

 

[Jacques Mi]

The hamster is running but the wheel a'int spinning.

 

[yablanowitz]

If brains were dynamite, he wouldn't have enough power to blow his nose.

If brains were gasoline, he wouldn't have enough fuel to drive a moped around the inside of a Cheerio.

 

[Dezignguy]

When they giving out brains he thought they said trains, he said he didn’t want to go anywhere.

 

[evergreensSequoiaseucalyptusandOaks]

Just A bunch of Levels without any Bubbles ~

 

[Vlade]

He's not playing with a full deck of cards

 

[UncleBoots]

Gotta admire the version from a hit song: lingered last in line for brains.