"yo 'si so 'si namo 'stu te" ei mantra paḍe
mukha-vādya kari' prabhu hāsāya ācāryere
yaḥ asi—whatever You are; saḥ asi—so You are; namaḥ astu te—I offer My respects unto You; ei mantra paḍe—chants this mantra; mukha-vādya kari'-making a sound within the mouth; prabhu—Lord Śrī Caitanya Mahāprabhu; hāsāya—causes to laugh; ācāryere—Advaita Ācārya.
Śrī Caitanya Mahāprabhu would worship Advaita Ācārya by chanting the mantra, "Whatever You are, You are-but I offer My respects unto You." In addition, the Lord would make some sounds within His mouth that would make Advaita Ācārya laugh.
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