Talking about the mechahitler bug is water cooler appropriate. Even funny. Talking about the sexcapades and fetishes you have at home is not.
"Lotta straight guys like watching their buddies fuck. I know I do."[0][1]
More seriously, on at least one occasion, a co-worker was showing a group of co-workers photos of their vacation at a swingers retreat. Let's just say nothing was left to the imagination. I'd add that this was an employee at the corporate headquarters of a Fortune 50 company.
[0] https://www.moviequotedb.com/movies/repo-man/quote_37738.htm...
[1] https://getyarn.io/yarn-clip/50d10668-35f3-40bd-8fd1-c8c1aa6...
Edit: Added detail about NSFW content at work.