Dude "+16 be careful" DOES not mean sex scene, nude scene, boobs being massaged, full nude woman shot.
Its safe to say it means its not safe for work. What reason its not safe for work is unclear from what was written, but thats besides the point.
Please honestly when you clicked on did you expect an almost porn scene? If you did then your the man.
I expected it was not safe for work because there was a warning posted with the link. No I did not divine that it contains "an almost porn scene". Again, thats besides the point.
To me and a few others this so called warning was a bit lax when the OP could have just as easily typed "nude content".
No one is saying it could not be more specific. A nudity warning would be helpful for someone at home around their wife or children for instance. But you said your gripe was that it led to you losing your job and that you wanted to get your lawyer involved. The threshold for something not being safe for work is much much lower. If someone you don't know is telling you to be careful with a link don't click it at work, thats darn straightforward.
A bit short sighted of him to assume this +16 means the same all over da world.
"Be careful" means the same thing all over "da world" if you can read English. It means don't view it at work, at least not in front of others.