It really depends on the person, and how I perceive the rp. I avoid just outright IC excusing myself if I see the person is just outright now. I'll play along a bit, and then Quki will shrug it off as the person being nuts, Eorzea is chock-full of nuts after all. I, thankfully, haven't found anything absurd yet, besides the odd character that portrays itself as the Warrior of Light or claims to have defeated primals, in this case I'll give the benefit of a doubt, and at least entertain the person. They just want to have fun, and I don't feel that I have any right to tell them how to have it, if they want to have a powerplay character, good on them. If possible, I might drop a /tell and other and chat a little OOC about a person, it really happened once of a person not knowing that you really can't go around claiming you're a Black Mage, so he toned down to "Talented Thaumaturge".
If it's something that outrights makes me uncomfortable, I'll just leave ICly, nothing more or less.
If it's something that outrights makes me uncomfortable, I'll just leave ICly, nothing more or less.