Amazing
The OP was completely dumbfounded by how a huge block of ice found its way inside a water bottle. How can a large ice chunk fit through the open orifice? You’d need to have skills in the black arts to manage this impossible feat! Oh, how ever does one achieve this level of black sorcery?
Answer: you fill the water bottle with water before placing it in the freezer. After a couple of hours, the water will solidify into ice, which is what you see in the bottle. There’s really no magic to it, which is quite disappointing, to say the least.