YOU SAID:
We banged in my parents room while they were out
INTO JAPANESE
彼らが外出中に両親の部屋で叩いた
BACK INTO ENGLISH
They beat in their parents' room while out
INTO JAPANESE
彼らは外出中に両親の部屋でbeatりました
BACK INTO ENGLISH
They beat in their parents' room while out
That didn't even make that much sense in English.