Worm grunting: How can thousands of worms be summoned from the earth?

What makes worms come out of the ground? - Quora

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Worm grunting - charm earthworms out of the ground - with Worm Gitter

earthworm - Crassiclitellata, Terrimegadrili

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earthworm - Crassiclitellata, Terrimegadrili

This weird trick will help you summon an army of worms - Kenny Coogan

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