A man ran into the psychiatrist's office, sweating

A man ran into the psychiatrist's office, sweating and screaming. "Doc, YOU GOTTA HELP ME! I'M GOING CRAZY!"
"Calm down, calm down. Of course I'll help you. What seems to be the problem?"
The man was still upset, but tried to settle down. "Doc, night before last I had an awful dream, I dreamed I was a TeePee! Then last night was worse, I dreamed I was a Wigwam! Help me, doc."
The doctor smiled and said: "This isn't serious, it is very simple. Your problem is that you are two tents