What is "can't stand"

Usage examples of "can't stand".

But I reckon I got to light out for the territory ahead of the rest, because Aunt Sally she's going to adopt me and sivilize me, and I can't stand it.

I can't stand it, and I just heard one out there, creeping along the hallway, jiggling doorknobs .

Some people just can't stand being out after they've been politically in for so long.

I get off the train a few stops early because I can't stand still.