Not P but another DFW question

[David Morris]

The back pocket is where most US men keep their wallets.

On Wed, Nov 30, 2022 at 6:01 PM Mike Jing <gravitys.rainbow.cn at gmail.com>
wrote:

> From "Authority and American Usage":
>
> As it is, though, liberals’ vanity tends to grant conservatives a monopoly
> on appeals to self-interest, enabling the conservatives to depict
> progressives as pie-in-the-sky idealists and themselves as real-world
> back-pocket pragmatists.
>
> What does "back-pocket" mean here?
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>