Low Tire

A phrase my father came up with to prove he can come up with a phrase.

In his words it means:
“you got toys in the attic”
“you ain’t got all the crackers in the barrel”
“you ain’t got a full picnic basket”
“you got 3 good tires but a low tire so you’re not all there”

Jeremy’s a little bonkers, don’t you think? He’s not all there. He’s got a low tire.