Talk of the devil.
美
英 
例句
It's bad manners of Dennis always to keep us waiting. Shall we go? Oh, talk of the devil, there he is.
丹尼斯很不礼貌,总是让我们等他,咱们走吧!噢,说到曹操,曹操就到。他来了。
If you talk of the Devil, he will appear.
如果谈论恶魔,它将会出现。
Talk of the devil and he will appear. I like to kid around with someone.
说曹操,曹操就到。我喜欢逗某人;我喜欢与某人开玩笑。