When your poop is halfway out/halfway in and it doesn't move at all no matter how hard you try to push it out. It's in a limbo when MOST of the poop is inside and the tip of it is hanging out - that's when it's so hard to push it out.
When your poop is in a limbo (and you can't get it out) you have to wipe your anus a lot because it will be so, uh, shitty. And becareful, as solid poop content might fall on your tissue.
My shit was in a bad state of limbo today. I just couldn't get it out no matter how hard I pushed. Now I think I've got a little bit of poop sticking out in my pants (can't clean it off!).