Pregnant women are smug

Why is it that we feel the need to treat women differently when they are mothers? Not in terms of giving them a seat on the bus or letting them in front of you in a bathroom line — but when it comes to stuff like pretending to care that your coworker got a sonogram or acting excited that your friend from high school is naming her unborn Riyleigh? Should we put women on a pedestal and treat them as untouchable bastions of goodness just because some sperm managed to find an egg? Or are we allowed to make fun of the fact that sometimes, pregnant women are smug?

Source http://jezebel.com/5229548/pregnant-women-are-smug-funny-cuz-its-true