Yea. You simply say, "I don't want to rolepaly, sorry." And then they go all "Hurr durr u r a gawd mawd hurr hurr hurr"
I liek to mess with powerplayers by chatting with them as if they never did anything. Liek so:
<Powerplayer> *rips throat out* Hahahaha!
<Me> So, what's up?
<Powerplayer> Pfft, you're dead, and I can't see ghosts. So I can't hear you.
<Me> Really? Sounds interesting.
<Powerplayer> (dude if u were a ghost u'd try to kill me)
<Me> You sure?
<Powerplayer> You cannot kill me! I am a god of Olympis! *shoots lightning at*
<Me> Wow. You're talented, my friend.
<Powerplayer> IDIOT! D:<
He went all rage ^^