Easy there, fella. I'm not calling you a liar, I'm just looking for references. I have a legalistic mind (see
http://66.134.92.10/ for details), and it'd be hard to make that claim myself over the Thanksgiving table when the only reference I can offer up is that some guy on Free Republic said that some other people on FR who claim to be Arab Christians that he's talked to say that the word "Allah" isn't just the Arabic word for "god."
With all the claims to the contrary that one finds with a simple Google search, that wouldn't carry much water.
So what do Arabic-speaking Christians call G-d?