YOU SAID:
I pooped on the floor
INTO JAPANESE
私は床にうんちした
BACK INTO ENGLISH
I was down on the floor
INTO JAPANESE
私は 床の上で
BACK INTO ENGLISH
I was on the floor.
INTO JAPANESE
私は 床の上で
BACK INTO ENGLISH
I was on the floor.
That didn't even make that much sense in English.