That is now to much to ask?
*mind blown*
No, I don't think you are asking too much. If you're running the game, you are the Gaming Operations Director. If you got someone who is playing like a dumb*ss, with some silly concept that is disrupting your game, whether it is a home brew world, or in Golarion, you have ultimate power, at the very least, to take the disruptive player aside and ask him or her to cut the crap... or, if you've a more devious streak, you can turn the tables on them, and maybe at least the other players can get some entertainment value out of all the hassle they have had to go through.