Well let's be honest, I personally haven't got worms but I was shocked to see this monster pop out of one of my friends garden pots, it even pocked it's tongue out at me.
I know you all think I'm mad and joking, well your right and this is obviously and ornament. I discovered it's actually a water feeder with a hole in the back of the head which you fill with water. It then gradually soaks through the pottery and in this case keep the lavender watered.
Best view the worm by using the magnify button above the picture.