Putting dry ice in the sink you mean? Well…. dry ice is frozen carbon dioxide. When you pour water on it, it forms massive clouds that erupt out of the sink and fill the room like a volcano! It’s great fun. If you ever go to a disco, it’s like the white smoke that they pump out sometimes. Try googling dry ice and water in google images – there’s some pictures there (I tried to insert a picture here but it wouldn’t let me!).
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