A bag of hammers - You tell someone they're a bag of hammers when they do somet

You tell someone they're a bag of hammers when they do something so dumb it makes you laugh until you cry.

My brother tried to eat a whole pizza. I told him he was a bag of hammers.

My friend fell off a chair. I said he was a bag of hammers.

My cousin said the president is a chicken. I told him he was a bag of hammers.