Literally: "tour of stadium"
This is when you, in the words of Jack from Lost, "run all the steps in every section of a stadium up and down."
Jack: It was a Tour de Stade.
Jack: When you run all the steps in every section of a stadium up and down.
Sarah: Why would you do that?
Jack: I'm intense.
Sarah: Did you finish?
Jack: No, I hurt my ankle.
Sarah: That sucks for you.
-from Lost season 2 episode 1
A phenomena observed when one is writing a ~10 page paper and finds oneself stuck at or around page 7. This is often followed by 3 very awkward pages consisting of extra sentences and/or paragraphs which needlessly flesh out the body of the paper.
Everything was going fine on that 10 pager I had due today. Then I hit the seventh page slump.