Bathroom humor

Leaving Tallahassee, I decide to stop at one of those rest areas on the side of the road. I went into the restroom. The first stall is taken, so I went into the second stall. I had just sat down when I hear a voice from the other stall ...

"Hi there, how is it going?"

Okay, I am not the type to strike up conversations with strangers in restrooms on the side of the road. I didn't know what to say, so finally I say: "Not bad ..."

Then the voice says: "So, what are you doing?"

I am starting to find this a bit weird, but I say: "Well, I'm on my way back home ... it's been a long day at work ...

Then I hear the person, all flustered, say: "Look, I'll call you back. Every time I ask you a question, this idiot in the next stall keeps answering me!"