A number of years ago I worked with two very nice, very young women, who were delightful people, but a tad...um....insulated. (One of them once asked me if Venezuela was in Europe. And she had been there.)
One of them had recently been married, and this was to be her first Christmas in her own home. She bounced into the staff room one day, having been out shopping. She was very excited to show us her purchase of her first Christmas decoration, a creche: "Look! Look what I got! A "maternity scene"! Isn't it cute?"
The second young woman, in a voice dripping with scorn, replied "It's not called a "maternity scene", it's an "activity scene". Jeesh."
At that point I interjected "you're both idiots. It's a NATIVITY scene."
But it was very cute.