The funniest comment I've heard came from my DS8 while we were at
MVMCP last year. It was just he and I (DH really doesn't get into that kind of thing...) and for some reason we hadn't had dinner yet and it was probably 7 p.m. We each had a bag of cheetos as we were running to the TTA ride in Tomorrowland. I had just opened my bag, ready to savor my first cheeto, when my son grabs my arm and notices a sign that said that no food and drinks were allowed on the ride. He insisted that we throw our bags of cheetos away (he's a real stickler for rules.) Ummm....no! So, I told him that we would just put them in my purse. He was nervous, but reluctantly agreed.
We get on the ride, and sit down, and now I'm ready to have my dinner...um, I mean, cheetos. I sneak one out of my purse and munch. Then I offer him one. He looked at me, totally straight faced, and said, "No thanks, mom, I
choose to obey the rules."

So serious. I quickly put my cheetos away, and congratulated him on being such a good kid.