I loved when a GM I know who's historically accurate if the time and civilization is well documented was asked to run a Spartans campaign after 300 came out.
I cracked up when the guys playing learned that Man-Boy Love was the norm for the society

I had one Game Mistress who's Demi Goddess NPC kept kidnapping my Character an changing her to a he an making him her toy, hell she stranded me once among a bunch of drunk horny gods though I am grateful that she faded to black I still had to RP as if terrible an unspeakable things happened when she took me home
Heck I'm still plotting that Goddesses downfall if she ever wants to renew that Campaign
Poor Cassandra was never the same after that