User blog comment:Seddie4eva/iPsycho:Bathrooms?!/@comment-2128395-20100616114903

Well, obviously they're not going to explain that on-screen. So much stuff was probably already cut from the episode, I find it hard to believe that they would put something as trivial as that into the episode.

But you're right, it does make you wonder. I assume that Nora probably escorted them to the bathroom when they needed to go.