Avoid saying 18+. Look for ways around it, like "Leave the kids at home!" or "Old and crusty? Let's get funky" you get it right-look for a harmless way to say no minors. and even then I'll be honest, minors will still absolutely lie to your face and go in. Only do it if you're feeling quirky, otherwise don't bother with the 18+ thing lol. It won't filter anyone. Kids know when they're putting themselves in harms way, they just don't care. Not until the situation is bad enough and usually by then its because it's moved to discord and now they're sharing irl things. There's nothing anyone can do other than immediately once alone, ask them directly if they're over 18. If they say yes, great! If they say yes and it was a lie, tell everyone you know and get them ostracized from future events like that as they rightfully should be-no mental health isnt an excuse either, don't fall for the pity party ploy. Kid's don't belong there. Most who lie and ERP continue on just fine because they love ERPing, but if they're going to do that then it should really be with people their own age if it must be done at all. Now that I think about it, we really need to stop obsolving them of all guilt. 16 isnt stupid, it's naive. A 16 year old isnt too dumb to also first ask the age of who they're with. That's a two way street. So for any minors here clutching G'raha fanfic, you need to hold yourselves accountable and start asking ages too. and you need to be honest about yours and stay out of spaces that you know arent for you.

Anyway back to the main point. Wording is everything. Water it down as much as possible. Type your advertisement and then read it like 20 times. Ask yourself "Now if I were a dork who had nothing but free time to get offended and read into things way harder than one should, could I in any way shape or form find this sentence incriminating?"