Horseplay (noun)

Rough or boisterous play, especially among children or young people.

Origin:

From horse + play.

Examples:

1. The children were warned against horseplay in the playground.
2. He was reprimanded for his horseplay during the class.
3. Horseplay is not allowed in the office.
4. He was hurt during the horseplay with his friends.
5. The horseplay in the swimming pool was getting out of hand.