Frog

When a monkey showed its face and teeth, a boy imitated and showed his teeth to the monkey. Some of the boys played with the frogs on the bank of the Yamunā, and when, out of fear, the frogs jumped into the water, the boys immediately dove in after them, and they would come out of the water when they saw their own shadows and stand imitating, making caricatures and laughing. They would also go to an empty well and make loud sounds, and when the echo came back, they would call it ill names and laugh.
(Krsna Book 12)

Sometimes they imitated the forest deer and various kinds of birds. They joked with one another by imitating croaking frogs, and they enjoyed swinging underneath the trees. Sometimes they would play amongst themselves like a king and his subjects. In this way, Balarāma and Kṛṣṇa, along with all Their friends, played all kinds of sports and enjoyed the soothing atmosphere of Vṛndāvana, full of rivers, lakes, rivulets, fine trees and excellent gardens filled with fruits and flowers.
(Kṛṣṇa Book 18)

On hearing the sound of the torrential rains, the frogs come out of the mountain caves and begin to chant, like brahmacārīs who chant the Vedic hymns by the order of the spiritual master.
(LOB 6)

Just like these frogs or toads, they’re talking whole day and night, ka-kara ka, ka-kara ka. Actually we have got tongues, and these frogs, they have got also tongue. So they are using their tongue, ka-kara ka, inviting snakes: “Please come here and eat me.” That is their business. Nature’s way. So if we simply talk like the frogs, without any kṛṣṇa-kathā, then we are inviting death very soon. So don’t waste your time, ka-kara ka. That is my request. It is our habit because we are no better than frogs also. We are also living entity, but we have got the chance to stop this ka-kara ka and chant Hare Kṛṣṇa. This chance we have got. The frogs, they haven’t got that chance. They cannot chant Hare Kṛṣṇa. That is the difference between the frog and myself. So similarly, if we waste our time in that ka-kara ka, then we are no better than the frogs. We are no better than the frogs.
So don’t make ka-kara ka when you assemble together. That is my request. If you have got time, spare time, simply chant Hare Kṛṣṇa, Hare Kṛṣṇa, Kṛṣṇa Kṛṣṇa, Hare Hare/ Hare Rāma, Hare Rāma . . . that should be your business. This is tapasya.
(730614 – Lecture SB 01.09.48 – Mayapur)