Today, my five year old was staying over and my aunt was trying to get him into the shower. He had just gotten some new cards with animals on them and wanted to take them with him. She said he couldn't because they would be ruined. He then looked though them then excitedly took out on with a whale on it and said "Not this one!!". He thinks that if a paper has something that can swim on it, then it is waterproof. MLIA