Serbian Jew double bluff is convincing people that doing something is bad for them, just so you can do it instead.

So, have you ever done this to anyone?

I did it three days ago. My friends and I wanted to buy an awesome leather jacket (very much like the one Tyler Durden wears), but there was only one left. So I pretended to be uninterested and told them I already bought the same jacket at half the price in a distant part of the city. So we decided we would go there tomorrow, but as soon as they got home, I went right back to that store and bought it. Feels awesome!