Yeah, we talk funny. I've been accused of having a southern Bavarian accent, we also have people who speak with the Neew Yawk accent, and a ton of freaks from Califunny. As far as "all the same".... you must have looked at the panhandle and not gone any further. We also have mountains, seashores, and the Hill Country.
Now, why dontcha' go an rustle up some corn fer the cook-out...yankee;-)
BTW, the area from Waco to Houston and all the way West to the great escarpment (just the other side of Midland and due South into Mexico) is FLAT, and that's where virtually all Texans live.
Flat, flat, flat~!!!
...and the heavily-forested Piney Woods of East Texas... ‘-)