YOU SAID:

the moment when I'm just about to head home but then remember i forgot to get french fries..

INTO JAPANESE

家に帰ろうとしているが、フライドポテトを食べるのを忘れた瞬間

BACK INTO ENGLISH

The moment you are going home but forget to eat french fries

INTO JAPANESE

家に帰る瞬間にフライドポテトを食べるのを忘れた瞬間

BACK INTO ENGLISH

The moment you forgot to eat french fries when you go home

INTO JAPANESE

帰宅時にフライドポテトを食べるのを忘れた瞬間

BACK INTO ENGLISH

The moment you forgot to eat french fries when you come home

INTO JAPANESE

帰宅時にフライドポテトを食べるのを忘れた瞬間

BACK INTO ENGLISH

The moment you forgot to eat french fries when you come home