In the two part episode where the Brady's visit the Grand Canyon,in the second part, when the Native American grandfather initiates the Brady's into his tribe, he says "To the east, to the west, to the north, to the south." The problem is, when he says "to the east" he pours the water to the left, where the west would be. He does the opposite with the east and says "to the west." Although you might think the north was behind him, in which case there would be no slip-up, it wasn't, because he poured the water in front of him when he said north.