YOU SAID:

My duck is big when I rub it with my hand

INTO JAPANESE

私のアヒルは大きいときに私は私の手でそれをこする

BACK INTO ENGLISH

My Duck was great when I rub it on my hand

INTO JAPANESE

私の鴨は大きいときに私は私の手でそれをこする

BACK INTO ENGLISH

My Duck was great when I rub it on my hand