Being noisy and disorderly.

get a shotgun and shoot them all

Rowdiness in class will not proceed without repercussion.

A sentence with an s' (s plus apostrophe) is a plural possessive.

The students' coats were hung in the closet.

The mothers' babies were all sleeping.

The teacher recorded the students' attendance.

The principal reprimanded the students' rowdiness.

The American League commissioner in 1901 was Ban Robinson. He was a man of strong words. He insisted that the games would now be played cleanly and free from the rowdiness and umpire baiting tactics of the National League.