YOU SAID:
The potato is going crazy!
INTO JAPANESE
ジャガイモがおかしくなっています!
BACK INTO ENGLISH
Potatoes are going crazy!
INTO JAPANESE
ジャガイモがおかしくなってます!
BACK INTO ENGLISH
The potatoes are going crazy!
INTO JAPANESE
ジャガイモがおかしくなってますよ!
BACK INTO ENGLISH
The potatoes are going crazy!
That didn't even make that much sense in English.