I can give you 0.5 btc if you promise to return 1 btc in one week.
If you agree please send me your address
I WOULD BE HAPPY IF YOU CAN SEND SOME HERE: 1Fder72y9qTjWuPqwWojXKt9BEz187R7Zh
Of course. Please say this:
"I promise I will return 1 btc for the 0.5 btc within one week."
Once done, I will send the bit coins.