so...have you ever received this reaction?

Lots of times when I tell people I have Celiac Disease, I get a blank stare in return.  Many people simply have never heard of it, or can conceive that someone might have something like a "wheat intolerance".  I get several questions and/or comments in return, and most of them go something like this:

• What in the world do you eat, if you can't eat wheat?
• Well, what about this? [shows me a random oat product, such as instant oatmeal or a granola bar]  This isn't wheat, why can't you eat this?
• So nobody can even touch you if they have eaten a sandwich?
• How do you go out to eat?
• I could never do that.  I would just eat some spaghetti and be done with it.
• But I made this special!  Can't you try at least one bite?
• What in the world kind of doctor would diagnose you with something so weird?  That just doesn't make sense.
• I think I'd put up with a little diarrhea if it meant I could have bread.
• I've never heard of anyone being allergic to wheat.

Once they get to that last one, I literally have to hold myself back from saying, "It's not an allergy, it's an intolerance. Weren't you listening?"

I know what I say (and I'll post that later on), but what do you respond to questions or comments like these?