(A customer walks into our sandwich shop with her very young son.)

Customer’s son: “I want a sandwich!”

Customer: “When we want something, we ask politely, remember?”

Customer’s son: “But I want chips!”

Customer: “No, dear, you ask, ‘May I please have some chips?’”

Me: “What will you be ordering today, ma’am?”

Customer: “I want a kid’s meal!”

Related:
Do As I Yell, Not As I Do
Do As I Shout, Not As I Do