YOU SAID:

You horse is horsing around with a nosy hose.

INTO JAPANESE

あなたは馬のホースで馬に乗っている。

BACK INTO ENGLISH

You are on a horse with a horse hose.

INTO JAPANESE

あなたは馬のホースで馬に乗っています。

BACK INTO ENGLISH

You are on a horse with a horse hose.