YOU SAID:
My mom is a lurker in disguise.
INTO JAPANESE
私の母は、変装の潜んでいる人です。
BACK INTO ENGLISH
My mother is a person lurking in disguise.
INTO JAPANESE
私の母は変装に潜んでいる人です。
BACK INTO ENGLISH
My mother is a person lurking in disguise.
That didn't even make that much sense in English.