A guy goes in to see his Doctor, says,

"Doc, you gotta help me! I'm having this recurring nightmare that is driving me crazy!"

The doctor asks him to tell him about his nightmare.

"Well, I keep seeing these two images over and over again- teepee, wigwam, teepee, wigwam, teepee, wigwam!"

The Doctor says,

"You're just too tense."

Pa-dump-chih