We were an all-in elf family: We watched the "Elf on the Shelf" holiday cartoon special ... on their behavior and came back to pull silly pranks each morning while they slept.

The Elf on the Shelf returns home to the North Pole on December ... Santa is sure to be jealous. To pull a harmless prank on your kiddo, take a selfie with your Elf while your kid is sleeping ...

Holly Willoughby, Jacqueline Jossa & David Beckham kick off Elf On The Shelf ©News Group Newspapers Limited in England No. 679215 Registered office: 1 London Bridge Street, London, SE1 9GF.