is it joke?

Today I went to a Juice shop (ghnay ki rs ki dukan). When I just finished my glass I saw a coin of 1 rupee at the bottom of glass. I was surprised, no way that I got 1 rupee the reason behind this that I all the juice which I have drank touched that coin and I was feeling which I can not tell you . And the thing which surprised me that when I informed the owner, he even did not give importance to me because he was very exciting because he got his lost coin.