[quote=@Captain Jordan]
<Snipped quote by Keyguyperson>

Do you consider requiring someone to be 18 to join the roleplay as a "we don't want players under 18" statement? Or do you feel that GMs must specifically say "get out" to someone they suspect is underage.
[/quote]

If it's a sexual roleplay? Don't join until you're 18. As said earlier, laws exist, so that's just a bad idea. If it needs you to be mature enough for the topic, then just be mature enough for the topic. The latter shouldn't have any kind of age even mentioned, because maturity has nothing to do with age.