Treat on a stick is a term used to describe a variety of frozen treats that are served on a stick. The most popular treats on a stick include creamsicle, popsicle, and tootsiepop. A creamsicle is a frozen dessert made of ice cream and flavored ice, while a popsicle is a frozen treat made of flavored ice. A tootsiepop is a lollipop with a chewy center. All three of these treats are served on a stick, making them easy to eat and enjoy.