This one item is to me, all in how you look at it. I don't know how old you are, but at an age over 45, I looked at it as appearing young enough to be pregnant. Being the particular shape of fat that I am, I naturally do look pregnant. Everything in an old fashioned maternity store (the kind that sells smocks, remember?) would be shaped for me. On top of that, my biggest issue with obesity is that it makes me feel like I look OLD.
So, when the young dutch girl at the ski resort sat down next to me at a table and managed to communicate in broken English that she thought it was great that 'they let me ski', my confusion gave way to mirth, to realize she thought I was pregnant. My 47 year old smile was genuine and I just nodded and agreed.