Sidekick

Today we watched the Incredibles and surprisingly James picked it out, it's not one of his favorite movies. He sat and watched the whole movie and when the end credits rolled he turned to me and said:

J: mom what's a sidekick?
M: it's a person who helps the superhero
J: oh okay
M: like Robin helps Batman
J: is it like this (as he kicks to the side)
M: well that is a side kick, it's not a sidekick
J: okay thanks mom

He then walked away talking about superheroes, it's so fun to watch him learn about new things.