Well, thank God their precious self esteem is still intact.
Me: "32oz diet soda please" HS Senior clerk: "umm...Is that small, medium or large?" Me: "Well, I don't know. Is your 32oz soda the medium one or the large one?" HS Senior Clerk: "uhhhhhhhhhhh.... HS Senior Manager: "Here, I'll hold them up for you" Me: "Um...Nevermind"