I had my first snowball
Where I come from that has a very different meaning
Probably a good Ask Eris question
I can think of 3 things that are snowballs.
1) Shaved ice put in a styrofoam cup with sweet flavored syrup poured over it in copious amounts. It must be shaved, not crushed.
2) A ball made from snow.
3) A Hostess dome shaped devils food confection with a white filling, covered with a marshmallow type layer and coconut (either pink or white)