How about:
1) Kansas VX
2) XV sasnaK

IF one was an ironman you could use:
1) Ying
2) Yang
(is Ying or Yang the black color???)

How about:
1) V
2) X
That way when your wife can't take this addition anymore you could say that's my "X"'s (Just kidding of course)

This sounds like a good problem to have!