At that time (while Yasoda was absorbed in celebrating the utthana ceremony and was busy receiving guests), the child Krsna, demanding to drink the milk of His mother's breast, angrily threw His legs upward - SB 10.7.6

Expressions researched:
"At that time, the child Kṛṣṇa, demanding to drink the milk of His mother's breast, angrily threw His legs upward"

Srimad-Bhagavatam

SB Canto 10.1 to 10.13

The liberal mother Yaśodā, absorbed in celebrating the utthāna ceremony, was busy receiving guests, worshiping them with all respect and offering them clothing, cows, garlands and grains. Thus she could not hear the child crying for His mother. At that time, the child Kṛṣṇa, demanding to drink the milk of His mother's breast, angrily threw His legs upward.

SB 10.7.6, Translation and Purport

The liberal mother Yaśodā, absorbed in celebrating the utthāna ceremony, was busy receiving guests, worshiping them with all respect and offering them clothing, cows, garlands and grains. Thus she could not hear the child crying for His mother. At that time, the child Kṛṣṇa, demanding to drink the milk of His mother's breast, angrily threw His legs upward.

Kṛṣṇa had been placed underneath a household handcart, but this handcart was actually another form of the Śakaṭāsura, a demon who had come there to kill the child. Now, on the plea of demanding to suck His mother's breast, Kṛṣṇa took this opportunity to kill the demon. Thus He kicked Śakaṭāsura just to expose him. Although Kṛṣṇa's mother was engaged in receiving guests, Lord Kṛṣṇa wanted to draw her attention by killing the Śakaṭāsura, and therefore he kicked that cart-shaped demon. Such are the pastimes of Kṛṣṇa. Kṛṣṇa wanted to draw the attention of His mother, but while doing so He created a great havoc not understandable by ordinary persons. These narrations are wonderfully enjoyable, and those who are fortunate are struck with wonder upon hearing of these extraordinary activities of the Lord. Although the less intelligent regard them as mythological because a dull brain cannot understand them, they are real facts. These narrations are actually so enjoyable and enlightening that Mahārāja Parīkṣit and Śukadeva Gosvāmī took pleasure in them, and other liberated persons, following in their footsteps, become fully jubilant by hearing about the wonderful activities of the Lord.