I've tried to figure that out and so has my brother.
I've been around her since she was a puppy and I don't get it. She's really great about communicating that she needs to go. And if you don't pick up on the hint, she'll bark or start tapping at your legs with her paws.
Once the person gets up, she always does the same thing. She'll only go out once they've returned to the chair to sit.
She's a great dog and is so entertaining so my brother just takes a seat so she can run outside.
