Related:

• Flyers do it in the air.
• Hackers do it top down.
• Programmers do it top down.
• This tagline is not upside-down.
• All papers after the top are upside-down or backwards, until you right the pile.
  Then the process repeats. -- Vile's Law of Grading Pape...
• You put the disk in upside down.
• Disklexia: putting floppies in upside dow
• Hey! Your Trackball is upside down!
• TIPS FOR PERFORMERS: Playing cards have the top half upside-down to help cheaters.
  There are a finite number of jokes in the universe....