AIBU not to tell my colleague about her daughter's OnlyFans

WTF? Report the male colleagues to HR at once.
Butt out of the other matter.

Could not agree more.

Also who is to say this parent doesn't know already? It's no one's business to tell them.

I’d be telling HR about the colleagues who shared this content in the work context. That is grossly inappropriate, almost certainly a breach of the company’s internet policy, and should be disciplined. The fact that it’s a colleague’s daughter’s account makes it worse, but sharing any explicit content at work is bad enough on its own.

He probably already knows.
Why would you say it to him? It is none of your business or his.
His DD is not going to stop because someone local found her online. She’s probably advertising on her instagram.
MYOB.

Disgusting lot need sacking.

Its nothing to do with your colleague (dad of OF girl) she is grown ass adult, he doesnt need to know.

What telling him will do is likely:

• embarrass him regardless of whether he does or doesnt know
• likely enrage/distress him that his colleagues are viewing explicit content of his daughter
• cause family disagreements for him as his daughters work is now disrupting his work life.

Its disgusting those colleagues felt able to bring this up at work and should likely go to HR. Showing pornographic material in the world place is likely gross misconduct.

Id send HR an anonymous email about it, make it clear that dad doesnt know about the situation and HR wont involve him as it technically doesnt concern him.

Yep came here to say the same. It would come under bullying

Because of some of the shit that I have been through I am a cynic.
And IMHO it sounds like you are being set up.
Your friend "whose DD is on only fans" is very likely to shoot the messenger, and is even if he is not in on it.
Your first port of call is HR, and that would be if you were shown the material not just hearsay from your "friend".
It is unclear as in your first post you say you found out through a friend then in another post that you were shown it.

I would tell him.

Still not appropriate to share videos of this kind of thing at a works social.

You were shown your colleagues daughters OF at a work social event? How ridiculous which male colleague is paying for the subscription then!?

Keep out of it. Ultimately it has nothing to do with you or your colleague who is the girls mum, 19 year old is an adult who has made a choice to put explicit content of herself out there, which whilst I appreciate and understand her mum would find that upsetting, it is still her choice to make and telling your colleague will only bring her upset.

Sharing sexual content in a work setting (and a work social counts as such) is covered under sexual harassment. Showing it about a colleague’s daughter would also come under bullying.

Fundamentally that act is what you should be horrified at and the company should take any report of it extremely seriously, potentially to the point it is gross misconduct.

You don’t inform the colleague yourself, you let the business deal with it all. If they do not they are leaving themselves open to a world of trouble.

Person who shows personal let alone Only Fans type of content should be fired by HR. What is HR doing and what a toxic workplace...

BUT, if it was my child, I'd want to know.

You might want to know, but that doesn’t mean you would - or should - have any right to know. Just because an adult happens to be someone you once gave birth to, that doesn’t mean they’re not allowed to keep things private from you.

what an odd workplace environment and culture. Not to mention the gossiping on top.

tbh OP it doesn't put you in a positive light either.

After all, as a human you have free will to walk away from "being shown" and listening to people gossip. Awful

I’ve named changed. You could be talking about my sd. We know. We know what she does. We know she’s been selling herself for a while and we are devastated. We’ve also been cut off several years for trying to stop her.
please don’t tell your colleague it’s likely he’s as embarrassed and upset as we are. But his daughter is an adult and is no reflection on his work

Say nothing.

As the saying goes; not your circus, not your monkeys.
Also, your friend a bit of a stirrer and your younger male colleges sound awful.

Prob bought subscriptions. She is an adult. If she wants to monetize herself that up to her. Her parents might not be happy but if she is happy doing it that's ok. I presume you have to pay to view? HR might be asking why this material is being viewed.

This, 100%. It's appalling that these men were showing explicit photos at a work event. (Even worse that they were showing ones of a colleague's daughter, but it's something I would report regardless.)

Let HR make the decision as to whether to warn the colleague - that needs to be on them, not you.

I think a lot of the “report to HR” people must work for big companies. Most employers don’t have an “HR”.

^^ This.

Well, I would have a discreet and gentle chat myself. How mortifying otherwise for him to discover he was the last to know. And he will find out.

100% this, straight to HR to say some male colleagues have been making totally inappropriate conversation and then sharing pornographic content (indirectly linked to a colleague) while at an actual work event. Ypu should definitely report as their behaviour is disgusting.