My wife's work has extreme filters...
She had an E-mail flagged for a large volume of obscene content, an automatic reply that her e-mail had to be read by Corporate HQ and a decision made as to her continued employment once they did.
The content of the letter used the medical terms for both male and female genitalia many times.
The letter was a Medical form, produced by the State of Oregon, including hundreds of listed conditions and their attendant body part, specifically regarding the claims work my wife does.
Obviously, nothing came of it once HQ actually put a Live person on the mail and saw it was part and parcel of the job, using state created forms.
Most of the websites are filtered out as well, including ones regarding anatomy. The office handles Workmen's Comp injuries. The wiser employees use their personal Android phones anytime they have to research lesser known conditions and medical procedures for approval.
"Common sense" is rarely common or sensible.
It's just better to expect every keystroke, every website, even the amount of time between clicks is reported directly to IT.