As an aside, did you know that it was the likes of Humpty Dumpty (and no doubt his soldiers) that helped the secret services weedle out spies during the Second World War? Even spies who spoke perfect English couldn't tell you what happened to Humpty, what Miss Moffat was frightened of or where Jack and Jill went. It's all part of our childhood culture and non-native speakers who grow up in Foreign countries don't always have it.