Invisi-Tags 1001 Series
This series is dedicated to the most elusive, most obscure, and most fantastically invisible tags in the galaxy.
1001P - The Phantom Tag 1001Q - The Questionable Tag 1001R - The Riddle Tag 1001S - The Sneaky Tag 1001T - The Tag That's Not There
You're looking for something, but you can't quite find it.
Perhaps you should try 1001O - The Obscure Tag.