YOU SAID:
That’s a knee-slapper
INTO JAPANESE
あれは膝打ちだよ
BACK INTO ENGLISH
That's a knee strike
INTO JAPANESE
それは膝打ちだ
BACK INTO ENGLISH
that's a knee strike
INTO JAPANESE
それは膝打ちだ
BACK INTO ENGLISH
that's a knee strike
You've done this before, haven't you.