So I recently pickedup this game for GameCube, but long before that, my best friend played the game and we noticed that the game was rated M for Nudity (alongside Blood and Gore of course), but after that, he said there was absolutely NONE. A statement even backed by Common Sense Media who said the same thing.
Nobody called the ESRB out on this? Surely, an organization that's the VG equal to the MPAA would be getting flak for misinformation like this. Then again, this is the same organization that gave Rockstar Games and Bethesda crap for certain hidden content (remember the Hot Coffee fiasco over San Andreas, and hidden nude files for TES IV: Oblivion?), but won't give Nintendo crap for including a more sexual character in their Smash 4 roster.
Granted, when I recently checked the ESRB website, the descriptor seems to be gone now, but still. I hardly remember anybody calling them out on it back then.