Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 6

Sanskrit:

सञ्जातकोप: स्फुरितारुणाधरंसन्दश्य दद्भ‍िर्दधिमन्थभाजनम् ।भित्त्वा मृषाश्रुर्द‍ृषदश्मना रहोजघास हैयङ्गवमन्तरं गत: ॥ ६ ॥

ITRANS:

sañjāta-kopaḥ sphuritāruṇādharaṁsandaśya dadbhir dadhi-mantha-bhājanambhittvā mṛṣāśrur dṛṣad-aśmanā rahojaghāsa haiyaṅgavam antaraṁ gataḥ

Translation:

Being very angry and biting His reddish lips with His teeth, Kṛṣṇa, with false tears in His eyes, broke the container of yogurt with a piece of stone. Then He entered a room and began to eat the freshly churned butter in a solitary place.

Purport:

It is natural that when a child becomes angry he can begin crying with false tears in his eyes. So Kṛṣṇa did this, and biting His reddish lips with His teeth, He broke the pot with a stone, entered a room and began to eat the freshly churned butter.