I actually had a really funny moment at a business telephone conference back in the days. I was sitting there with my colleges, all non-native English speakers, and we were talking to some guys in the US. One of our people was not in the call, and one of the 'mericans said "Yeah, he's the shit".
My guys went apeshit over this, fucking livid, and all my best attempts to cool them down and explain what the 'mericans meant were in vain. The 'mericans, meanwhile, had no idea (none!) what all the commotion was all about.
After the call, I calmly tried to explain the conceptual difference between "shit" and "the shit" again to my guys, but I do not believe they ever understood it or even believed me.