One Russian asks the other. "If you had two cars, would you
give me one?" The other one replies "Of course". The first one
asks again "If you had two horses, would you give me one?"
The other one replies "Of course". The first Russian asks third
time "If you had two chickens, would you give me one?"
The other one replies "No". First Russian says "Why not?".
The other one says "Because I do have two chickens