This is a good thread! Here are some of the comments I've gotten:
Lady at the grocery store: "Wow, you must be due like tomorrow?" (Mind you, this was a couple months ago.) Lol.
My sister constantly: "You are the largest pregnant person I've ever seen!" or "I wonder how much more you will grow" or "Let me check your belly for stretch marks!" or "We're putting you on a strict fitness routine once she comes out" (Yes my sister, god love her, is a fitness/health freak and obsesses over her weight. She now thinks its her job to obsess over mine).
Lady at the movies last weekend, checking my license (Yes, I'm almost 24 and still look very young): "Wow, your face has really become swollen." This lady doesn't even KNOW me...I wouldn't dare say that to someone whom I didn't know! Wow!
So yes, for some reason people think they can just say whatever they want to us pregnant women with no regard to how we will feel after they say it. I'm just waiting to explode on some random person who says one more thing to me. I'm at the stage where I'm moody, very moody. So...bring it on.

(Is there an evil smiley I can put in here?) haha