Dee Shedrick
Growing up in New Orleans there was always a lady who sold 
what I called icebergs to children in the neighborhood. Icebergs are usually made with Kool-Aid and come in a variety of flavors. I made some strawberry icebergs and shared them with my fellow co-workers and asked them what they used to call them when they were kids. What a fond childhood memory!
Mike Calton from maintenance called them icebergs too, but he also remembers referring to them as frozen cups and huck-a-bucks.
Instructor Deb Kohler called them sweet cups.
PR’s Leslie Salinero called them slushies.
Community 
I remember icebergs as a child in the late 80’s, we use to get them 4 for $1.00… from corner stores.
as a kid we called them zips and lots of neighbors sold them for a nickel or dime out of their home freezers