It comes in the form of a pizza store mascot, the Mellow Mushroom.

Apparently, if you follow Mellow Mushroom on twitter, a crazy-eyed, giant, yellow mushroom will hunt you down in real life.

Nowhere is safe. It will hunt you in public toilets, in the park, at the supermarket and trap you in lifts.

It just goes to show what a soundtrack can do to change the mood of a video.

But, you have to admit, it’s an interesting take on a Twitter follower campaign.

Happy Halloween Anthillians! May the creepy, yellow Mellow Mushroom not knock on your doors tonight!

Mellow Mushroom Pizza – You follow us, we’ll follow you