Diarrhea that creates a significant upward force on your rectum, propelling you off the toilet seat and into a whole new world. Learning to harness your power into controlled flying takes practice and shit. Afterwards you'll be quite pooped.
-Heard you were pretty sick last night.

-Yeah..it was pretty bad. I had jetpack diarrhea. One moment I was reading popsci, and the next I was stuck in the neighbors tree. It was pretty crappy.
by CIPACS November 13, 2010

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