YOU SAID:

that was the stupidest thing ive ever seen

INTO JAPANESE

それは今まで見た中で最も愚かなことでした

BACK INTO ENGLISH

That was the stupidest thing I've ever seen

INTO JAPANESE

それは私が今まで見た中で最も愚かなことでした

BACK INTO ENGLISH

That was the stupidest thing I've ever seen