I died! That is so funny! I imagine that moment:
Chris Pratt: Do you want to go at Starlord for Halloween?
Kid: No! I wanna go as Captain America!
Chris Pratt: *😦* Ok, Kid! How you wish!

In the comments under this meme I saw one comment that was so true. It was: You are a Guardian and you son wanted to be an Avenger.

I think this is so funny because the two actors have the same surname. Chris Pratt and Chris Evans. Otherwise this joke wouldn't be so funny in my opinion.