Worm charming, worm grunting, and worm fiddling are methods of attracting earthworms out from the ground. It is usually done to collect bait for fishing, but it can also be a sport. Most worm charming methods involve vibrating the soil, which encourages the worms to the surface. One method involves twirling a steel pole in the ground, which moves the dirt, making the worms in the area go to the top of the ground.