Professional politeness

Have you ever met one of those people who you say something in politeness and they take you for real.
Like you're on the phone with a professional contact (who you don't speak with that often) and they say "Oh its sunny and warm in Florida - you should come visit us" you know they don't really mean 'jump on the next plane and stay at my place' but some people actually are like "WOW I just got invited to go to Florida with a place to stay - wonder how much airfare is!!! " People are idiots.