When I was in high school, I knew two girls who were avid PETA supporters. 
One of their favorite Saturday night activities was to visit Osco Drug with a bunch of “Animals Were Tortured In the Making Of This Product” stickers and affix them to ‘naughty’ cosmetic products known to do animal testing.

Apparently, there is a new faction of people engaging in similar activities, albeit with much more entertaining goals in mind.

“Shop Dropping” is like reverse shop lifting.  It involves leaving something on a store shelf (usually repackaged goods with some sort of artistic / humourous / political message) and then returning a few days later attempting to buy it, in order to watch the clerk’s reaction.

Interesting stuff, and the girl’s English accent makes it all the more watchable.  Rawr!

Notable quote:  I LOVE NERDS