[Jeff Chandler]

. . . (to put someone against the wall) means to hold someone accountable,” Thunberg tweeted. “You know, as in Put him against the wall and blow his frickin brains out.” That’s all.

[skimbell]

Or when you say that someone is "sleeping with the fishes".

You just mean that they fell asleep in their recliner watching the aquarium.

Simple misunderstanding.