I work as a teacher and currently have a class of 7 year olds. I wasn't planning on telling them just yet but was sure one particular girl (who doesn't miss a treat) would guess at some point. Class are sitting on the carpet quietly, waiting to see who's going to be the first to get ready for lunch. I send a couple of them off as they're sitting beautifully. Predictable girl looks at belly and looks me in the eye. "You look pregnant." Me, smiling "Do I? Must have been all the chocolate and Christmas cake..." Girl "My sister is pregnant. She looks just like you." Subject changes quickly to the sweets they got at Christmas. She would NOT let it lie later on. She sneaked up quietly and looked at me when I was standing next to my desk. All of a sudden the hand goes onto my belly. "It's round" she said, smiling. "Mine is round too, but it's cos I'm fat." Looks like I'm going to have to tell them sooner than I thought!