The Shelbyville lemonade boy is an unnamed boy who lives in Shelbyville.
While looking for the stolen lemon tree, Martin Prince saw the boy, making lemonade. Thinking the lemonade came from the tree, Martin accosted him. The boy told him that was Country Time lemonade mix, but Martin didn't believe him. Then his older brother came and wanted to beat Martin. However, Nelson Muntz appeared and reluctantly threw him away.