About 2 months ago, I saw a patient who was struggling with weight gain and it turned out he had insulin resistance. So, we talked about regular exercise and dietary stuff and I sent him onto an endocrinologist for management. As he left, I joked, "Now, the next time I see you, MY belly better be bigger than yours!"
Today, I saw him again in the office. He took one look at my belly and said, "Hey, no fair...you're just not gaining weight fast enough!"