I don’t say god bless you, but if I’m dealing with a really difficult and negative person who is trying to get a reaction out of me I smile as big as I can and say the most positive things imaginable. This typically infuriates the other party and I really enjoy that.
Gosh mister, I’m sure sorry! I must be acting like a real jerk for you to treat me like this! What?! You hope I die? Boy, that’s odd, I only hope YOU have a wonderful day! Well, no, I’m not going to go fuck myself. I’m going to go have lunch. Would you like to come? I’m buying!