I've had my lunch break today at one of the places where you get to choose which ingredients are used. What irked me was the gentleman who "assembled" my food asking "Are you sure?" after every single choice I made, particularly when I refused some feature that would cost extra.
I started out polite and smiling but after the fifth or sixth time he asked me if I was sure I let my face kind of freeze in position and didn't say anything anymore.
He actually picked up on that and said "I'm not forcing you, I'm just asking."
I didn't comment on that but proceeded to pay up, say thank you and left the store.
To those of you lucky enough to already possess a polite spine (I'm still working on it): What would you have said, if anything?
As for me, in my mind I was saying, with a bemused smile, "I'm sure you're just trying to be polite, and maybe it's store policy here, but getting asked that question that many times is really annoying."