Skip to main content

You are sharp as a wet sack of marbles 

Lacking the basic intelect of being able to breathe.
You are sharp as a wet sack of marbles.

Sharp as a Marble 

If you can't figure out what this means, it's probably you.
Person 1: He's not the sharpest tool in the shed.
Person 2: Not the sharpest? He's as sharp as a marble.
Sharp as a Marble by j99barker June 29, 2016