CC Antya 16.141

ei śloka śuni’ prabhu bhāvāviṣṭa hañā
utkaṇṭhāte artha kare pralāpa kariyā
Word for word: 
ei śloka — this verse; śuni’ — hearing; prabhu — Śrī Caitanya Mahāprabhu; bhāva-āviṣṭa — absorbed in ecstatic love; hañā — becoming; utkaṇṭhāte — in agitation of the mind; artha kare — makes the meaning; pralāpa kariyā — talking like a madman.
Translation: 
Upon hearing the recitation of this verse, Śrī Caitanya Mahāprabhu became absorbed in ecstatic love, and with a greatly agitated mind He began to explain its meaning like a madman.