CC Antya 11.51

haridāsera guṇa kahite prabhu ha-ilā pañca-mukha
kahite kahite prabhura bāḍe mahā-sukha
Word for word: 
haridāsera — of Haridāsa Ṭhākura; guṇa — attributes; kahite — speaking; prabhu — Śrī Caitanya Mahāprabhu; ha-ilā — became; pañca-mukha — as if possessing five mouths; kahite kahite — while He was speaking; prabhura — of Śrī Caitanya Mahāprabhu; bāḍe — increased; mahā-sukha — great happiness.
Translation: 
As He described the transcendental attributes of Haridāsa Ṭhākura, Śrī Caitanya Mahāprabhu seemed to possess five mouths. The more He described, the more His great happiness increased.