I know it can be frustrating. Someone at work decided to impersonate me waddling as I was making one of my many trips to the ladies room. I just laughed it off because, well, it's true and pretty funny. I have decided if I take every comment or gesture seriously it's going to make for a long miserable end of pregnancy.
Re: UPS jerk!
He only saw me take four steps, so I'm sure you're right. I just wish that people knew that the only appropriate comment is "You look great!"