The nice short Lady Luck ambigram displayed to the left is a good example of the letters in one orientation flipping over to become different letters in another orientation.
The graphic to the left shows that this design reads 'Lady' when upright and reads 'Luck' when upside-down (or is it the other way around?).
Hover over the ambigram to see it spin.
If you like this design, here is more good news. You can purchase anything in the FlipScript store with this design. All you need to do is to click on a category in the red bar above and every product will display the Lady Luck ambigram.