Lamp Post Metaphor?

He has the intellect of a lamp post.
He is as straight as a lamp post.
He has the flexibility of a lamp post.

Anonymous Heard of a lamp post metaphor. What would be an example?

You may be referring to "the lamppost allegory", sometimes quoted as an example of poor reasoning that can affect even the most advanced scientists. It doesn't qualify as a metaphor, but some people might mistakenly call it that.

Very similar to the evangelist baptizing people at the river. A drunk happens to get in the line, and after the dunking he's asked, "Have you found Jesus?" The drunk replies, after he gets his breath, "No. Are you sure this is where he went under?"

PhilipVery similar to ...

Not surprising. If you read through that link, you see that one v

Dumb as a lamp post.