YOU SAID:

I dont know why i cant lick my nose

INTO JAPANESE

なぜ私は私の鼻をなめることができないのか分からない

BACK INTO ENGLISH

I don't know why I can't lick my nose

INTO JAPANESE

なぜ鼻を舐めないのか分からない

BACK INTO ENGLISH

I don't know why you don't lick your nose.

INTO JAPANESE

なぜ鼻を舐めないのか分かりません。

BACK INTO ENGLISH

I don't know why you don't lick your nose.