I'm assuming what he means, facetiously, is that you meant you were going to use a callsign with the prefix of 1B versus what you meant that you were going to be operating in the 1B class for field day, a portable station operated by one or two people or a battery operated station. http://www.arrl.org/files/file/Field-Day/2014/2014 Rules.pdf
There does seem to have been an up-tick in enforcement of people not following the rules regarding identification.
Ah...thank you. With the emcomm & SAR background I've always been particular about proper identification. I was referring to a 1B class station operated by myself off commercial mains at the campground.