Talk of the devil - Suppose when you are talking about someone, with someone else or just thinking about him/her and suddenly the person about whom you were talking arrives then it is said talk of the devil. However in India, this thing just is opposite. It is moreover a humorous idiom.
1. I was thinking about you, talk of the devil and you are here.
2. She was left alone in the house, praying for her mother to come and she came, talk of the devil.
3. I was dreaming if you were here, and see talk of the devil, and here he is.