So, shelf elves date back to the 50's, then re-imagined in a book in the early-mid 2000's. Now, Elf on the Shelf is a toy that parents place around the house to keep tabs on the kids. At various times the elf is moved to give the appearance that it is watching over the our every move and will then report back to Santa about our behavior.
Well, now the Elf on the Shelf has taken on a new life on Instagram. People are taking pictures of the elf in various places, positions and scenarios. Many of which, are funny and inappropriate, to say the least.