We inherited a couple gallons of Tampico thanks to my wife's grandma's birthday party last week, including this Tropical Punch flavor.
It tastes exactly like someone melted a few hundred rocket popsicles and put the resulting liquid into a jug. My only experience from these popsicles is at my grandma's house in the summer. One year my parents went to Israel for a few weeks and left us there. I spent a lot of time riding my bike in circles around that block and eating those popsicles.
Here is a photo for reference.
Anyway, kinda weird. If I were really enterprising I'd look at the ingredients for both and see how similar they really are or if my tastebuds are remembering the rocket popsicle wrong.