Why won't everypony leave Cheerilee alone about being single?!

(Featured on EqD.)

(Audio versions by Mr Kenyon and FarnesyFudge.)

Luna has had enough of Celestia's games, and has found the perfect means of revenge. Using a long-forbidden spell, she transforms her sister into little more than a small filly, all so she could pull the greatest prank ever. Unfortunately, she soon learns that before you fool around with dangerous magic, you really need to read the fine print...

A sequel can be found here.