听力原文:F: What do you usually do in your spare time? M: I like staying at home and DIY. F: Woo! What do you do particularly? M: I like to make some furniture and family decorations myself. F: How did you come to like that? M: Well, I once visited one of my friends. He did very well in decorating his own house. I came back and started my own decoration. It costs less. Now I am an expert. What does the man mean by 'DIY'?