It's getting tempting to be rude to people like this. However, it's not worth it...
W.Foods Checker: "When is your baby due?"
Me: "In May, but not soon enough."
W.Foods Checker: "Oh, don't talk to me about that. That's nonsense."
Me: "I mean I just want her out safely."
W.Foods Checker: "Well, I have four boys. I breastfed one of them while pregnant with twins. Then, when the twins came, I breastfed all three of them at once. And, they were 6 pounds each. What you've got going on there (pointing to my belly) is nothing. You don't know how hard it is until you carry twins to full term."
Me: "Yes, that is certainly commendable."