Say your husband runs into someone he hasn't seen in a long time.
And he comes home and says, "Hey, I ran into Miguel today. You know what he said? He said I'd put on weight! Can you believe it?"
The best response to this is:
(And please remember the marital harmony part.)
A. "He must be smoking crack." Accompanied by a look of surprise.
B. "What a weird thing to say to you!" Said with a sneer that conveys that you never liked the guy anyway.
C. "No fucking kidding." Said with hands on hips and a maybe-you-should-cut-out-the-cheeseburgers-and-beer look.
I'll give you a hint, based on personal experience. The answer is NOT C.