Here is how the Yanks remember the relative positions of the planets of our Solar System from the closest orbit to the Sun to the outermost. Just remember that the pizzas have been off since the year 2006, Pluto no longer being categorised as a planet.

My Very Exciting Mother Just Served Us Nine Pizzas

My way of remembering this is to treat the respective first letters as two words :- MVEM JSUN (pronounced "emvem Jasun")

Here is a map of our Solar System showing the Planets and Dwarf Planets