“The milk man”
Milk used to be delivered to your front door.
Why does little Johnny look like the milk man?
In glass bottles, with little cardboard stoppers and a pleated, heavy paper cap. He'd leave them in an insulated, galvanized sheet metal box.
In the winter, the milk would freeze and push up the paper top with a cylinder of frozen milk.
Still is. I get mine from the milkman every Monday.