YOU SAID:

So there was this one guy who knew this one guy who knew this guy who started to sleep with mussolini

INTO JAPANESE

だからムッソリーニと寝始めた、この男を知っていたこの 1 人の男を知っていたこの 1 人の男があった

BACK INTO ENGLISH

So I had this one guy knew this one guy knew this guy and started to sleep with Mussolini

INTO JAPANESE

この男はこの男を知っていたし、ムッソリーニと寝始めたこの一人の男を知っていたので

BACK INTO ENGLISH

And this guy knew this man, and he knew this one man started to sleep with Mussolini