I may have coined a word or two, probably inadvertently, but I notice that children often use words that adults would not think of--I used to tell my kids(with some emotion) that there was no such word as "tump"--apparently meaning "turn over and dump out". They used the word anyway and were delighted to find it in a novel-I think it was "On the Beach". More kidspeak (besides blanky, wa-wa, etc.)?