not the sharpest tool in the shed

not the sharpest tool in the shed

Not intelligent; dim-witted or prone to stupidity. His new boyfriend isn't the sharpest tool in the shed, but he's pretty good looking! I wasn't the sharpest tool in the shed in school, but I still managed to find a profession I loved.
See also: not, sharp, shed, tool
References in periodicals archive ?
He's not the sharpest tool in the shed but Joey Essex knows what really matters to a celebrity boy in a modern world.
Okay, I know I'm not the sharpest tool in the shed, but I need some help here.