YOU SAID:

Why is the hot water cold and the cold water hot.

INTO JAPANESE

熱い冷たい熱い水と冷たい水です。

BACK INTO ENGLISH

It is hot, cold and hot water and cold water.

INTO JAPANESE

それはホット、コールドとホット水と冷たい水です。

BACK INTO ENGLISH

It is hot, cold and hot water and cold water.