Thanks to a wonderful thing called conditioning, Obi gets a treat every time she comes inside from using the lawn as her giant toilet. But she now thinks she should get a treat every time she performs the action of going out the back door then coming in. Even if it means walking out on to the patio and turning right back around. Then she'll bark incessantly until she gets a treat. Once she gets a treat, she's quiet. That is, until she realizes we are no longer paying attention to her. Then she'll bark. She knows that if she barks enough, we'll get fed up and give her peanut butter.
Ugh.
holytoastr's right. She's completely in control of this house.