Srimad Bhagavatam Canto 10, Chapter 18, Text 12

SB 10.18.12

bhramanair langhanaih ksepair
cikridatur niyuddhena
 kaka-paksa-dharau kvacit
Krsna and Balarama played with their cowherd boyfriends by whirling about, leaping, hurling, slapping and fighting. Sometimes Krsna and Balarama would pull the hair on the boys’ heads.
The acaryas have explained this verse as follows: The word bhramanaih indicates that the boys, pretending they were machines, would sometimes whirl about until they became dizzy. They would also sometimes jump about (langhanaih). The word ksepaih indicates that sometimes they would hurl objects like balls or stones and that sometimes they would grab each other by the arms and throw one another about. Asphotana means that sometimes they would slap one another’s shoulders or backs, and vikarsanaih indicates they would drag one another about in the midst of their play. By the word niyuddhena arm wrestling and other types of friendly fighting are indicated, and the word kaka-paksa-dharau means that Krsna and Balarama would sometimes grab the hair on the other boys’ heads in a playful manner.
Srimad Bhagavatam Canto 10, Chapter 18, Text 11
Srimad Bhagavatam Canto 10, Chapter 18, Text 13