Because my game is clearly more fun than the other one, and inspires more originality than "Nephilim lives in London", "Nephilim is a mod!" and so on, so forth ad nauseum.

Basically it's what the title says, but let's avoid anything actually offensive. So if I was replying to Nephilim, I would say something along the lines of:

^ Nephilim hopes one day to become a plastic surgeon, but unfortunately is lacking hands so liposuction will have to be done with a straw.