YOU SAID:
when in doubt slap her mouth
INTO JAPANESE
疑問が彼女の口を平手打ち
BACK INTO ENGLISH
Wonder's slap her mouth
INTO JAPANESE
不思議は、彼女の口を平手打ち
BACK INTO ENGLISH
No wonder's slap her mouth
INTO JAPANESE
不思議のない彼女の口を平手打ち
BACK INTO ENGLISH
No wonder her mouth up slap
INTO JAPANESE
平手打ちを彼女の口が不思議します。
You've done this before, haven't you.