YOU SAID:

What do you mean I can't eat cake?

INTO JAPANESE

どういう意味だ、できないのか？

BACK INTO ENGLISH

What do you mean, can't you?

INTO JAPANESE

どういう意味ですか？

BACK INTO ENGLISH

What do you mean?

INTO JAPANESE

それはどういうことか。

BACK INTO ENGLISH

What do you mean?