Like I said before, the ignorance and lack of knowledge on these people's part is ridiculous.
I went into a Wendy's with my son after he got out from school. There was a lady waiting for her food to go, I politely asked", are you folks in line? She said "no", I said " thanks" and proceeded to the counter. Apparently she noticed I was OCing as she deliberately changed her location to verify I had a firearm. She then started to display panicky behavior, rushing around to get her napkins and whatever before she left. She did it in such a "grandstanding" fashion, that it brought unnecessary attention and made other guests notice.
It kind of put's the OC'er in an awkward spot, but I remained calm and kept to myself. One guy waiting looked at me after she left and "unbelievable", meaning her ridiculous behavior.