The following is an extract from a National Geographic website...
"Brick on a Stick
1919: Danish immigrant Christian Nelson sold candy in Iowa. One spring afternoon, a young customer wanted some chocolate. Then he changed his mind. What he really wanted was ice cream. That gave Nelson an idea. He created the I-Scream Bar�a small brick of ice cream coated with chocolate. Nelson then placed his creation on a stick, just as factories do today."
It may well be a dumb-bell, too, of course!