Waiters in the U.S. depend a lot on tips, some of them, entirely on tips. So imagine what happens when you don't tip them? They're pretty much working for free. This one waitress was frustrated by the presence of a notorious non-tipper she decided to get back at him in a clever way. Watch how she folded the napkin into something else!

1. Normal looking.

2. Still very normal looking.

3. Nothing's happening yet.

4. Something's happening now!

5. Still looks normal.

6. Is it a plane?

7. Wait, is this becoming what I think it is?

8. What...

9. Oh...

Please tip.