I just got done reading a post on that Catholic forum (you'll probably see it on the main page). The arguement was about (what else?) gay marriage and someone said this.
<<Do you believe that the definition of gravity should be changed, too? Some people might think the current definition of gravity is unfair. >>
*headdesk*
Really? We're comparing a man made construct that we can change to a natural law that cannot be changed? Of course other people pointed that out, but since they were dealing with Christian Apologists, the biggest bullshitters on the planet, it went over their head.
And I've heard the gravity arguement used in other contexts. Any time someone points out that a certain rule or law is unfair, someone will point out how Gravity can be considered unfair. Again, ignoring that we can actually change unfair laws Another context is with hell and free will, acting as if going to hell is a natural consequence of doing what ever thing the church didn't want you to do. When in THEIR OWN hypothetical situation, hell is clearly a punishment. The exact can be used to justify dictatorships. Don't try to change things, you can't change it, it's like fucking gravity!
These stupid analogies get on my nerves because they're so full of holes, but fundies act like it's the most clever thing ever.