Two snowball stories.
In the fall of 1969 I was involved in a massive snowball fight at Washington State University, fought between fraternity members and non-fraternity members. Several hundred people were involved, five went to the hospital (I believe all recovered OK) and two or three thousand dollars worth of windows were broken.
I'm not sure of the date, probably in 1940 it snowed on the University of Texas, and of course a snowball fight broke out. A young woman threw a snowball at a guy that had attracted her attention. Unfortunately she missed him and hit the guy next to him. That man fired back and one thing led to another, they married two years later. I owe my existence to my mother's inability to throw a snowball and hit her intended target.