YOU SAID:
Ain't that a kick in the head.
INTO JAPANESE
その頭のキックではないです。
BACK INTO ENGLISH
It is not the head kick.
INTO JAPANESE
それはヘッドキックではありません。
BACK INTO ENGLISH
It is not a head kick.
INTO JAPANESE
ヘッドキックではありません。
BACK INTO ENGLISH
It is not a head kick.
That didn't even make that much sense in English.