Impossible? No, just unlikely.
The nice short Jack Ambigram displayed to the left is a good example of ambigram artistry at work!
As you can see this design reads 'Jack' when upright and also reads 'Jack' when upside-down (or is it the other way around?).
Try it out now. Just swipe the design (on a touch screen) or move your mouse over it to make it rotate.
Looking to create something different? Make anything you want with the Create New Design button.
Select This Design Create New Design