Why do kanwariyas say 'bomb bhole' while carrying kanwariyas? Know the meaning of 'Bol Bomb' chant from Pandit Ji.

During the month of Sawan, Shiva devotees embark on the Kanwar Yatra and bring Ganga water to perform water abhishekam for Lord Shiva. During the Kanwar Yatra, Shiva devotees chant 'Bol Bam, Bam Bhole' as they walk.