All the talk about tits reminded me of when I was trying to post photos of red-vented bulbuls to the local birdwatching group.
I was told that it was rude. I asked how. They wouldn't give me a straight reply.
Finally, it emerged that talking about the birds' 'vents' "robs them of dignity". I told them to take it up with the scientists who named them, maybe?
Asked for alternatives, but bottom, butt, behind - all were deemed rude. "Back" would be acceptable, but actually it wouldn't because back does not equal butt
Ultimately they banned posting about any birds with 'vent' in the name.
Come to think of it, I never saw any 'tit' mentioned there either