a six year old upgrade

I have been meaning to post this for some time and just keep forgetting.

My mother-in-law was making my son lunch along with their Dad. When given his lunch options he decided on a BB&J. While sitting at the dining room table, waiting to be served, he casually asked if he could upgrade his lunch.

"What?" they asked not quite understanding.

"I want to upgrade my sandwich to include a pop and chips!"