fall off the turnip truck

fall off the turnip truck

To be gullible, naïve, or unsophisticated. The subject is often a person from a rural or rustic background. Mary has no idea about how to act in polite society, always behaving as if she just fell off the turnip truck.
See also: fall, off, truck, turnip
Farlex Dictionary of Idioms.

just fell off the turnip truck

Rur. ignorant; unsophisticated. He stood there gawking at the buildings in town like he just fell off the turnip truck. My cousin acts like she just fell off the turnip truck.
See also: fell, just, off, truck, turnip
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • fall off the cabbage truck
  • just fell off the turnip truck
  • turnip
  • greenhorn
  • a babe in arms
  • babe in arms
  • babe in the woods
  • babes in the wood
  • a babe in the woods
  • I wasn't born yesterday
References in periodicals archive
Language disqualifying Augustus was placed in the contract at the insistence of Councilor Lukes, who didn't just fall off the turnip truck and likely suspected what her colleagues were up to.
They add to that, "He didn't fall off the turnip truck, he was driving it." Now even George Will, the anointed intellectual guru of conservatives, has turned on him, questioning his wisdom, rather derisively, in nominating Harriet Miers to the Supreme Court.
Well, I did not just fall off the turnip truck. I would have been, in other circumstances, suspicious.
We didn't just fall off the turnip truck, but vegetables are piling up at farmer's markets and in produce aisles that we've never seen before, or even heard of.
The Antiquarian Society folks didn't just fall off the turnip truck.