I don't allow real world names, joke names, or names with superfluous apostrophes. This is one of the few hard and fast rules of my games and I will happily kill a PC with a bad name.
I have to ask: is this serious or just hyperbole? Like... you haven't actually killed a PC because you didn't like their name... right? Because, and I'm just spit-balling here, if you were that "offended" by the name it'd make more sense to say something rather than strike the character down. So yeah, hoping this is some sort of extreme exaggeration for emphasis.
I've gotta say, some of you guys really have a hard-on for this kinda thing more than I'd ever thought possible. Not criticizing to be clear, just having one of those "Huh... alright..." sort of moments.