YOU SAID:

I was just kidding I’m not sleeping on the couch

INTO JAPANESE

ソファで寝てないのは冗談でした

BACK INTO ENGLISH

It was a joke not sleeping on the couch

INTO JAPANESE

ソファで寝ていない冗談でした

BACK INTO ENGLISH

It was a joke that I didn't sleep on the couch

INTO JAPANESE

ソファで寝なかったのは冗談でした

BACK INTO ENGLISH

It was a joke that I didn't sleep on the couch