To start of, I'd like to begin with my question on Meta Academia SE: What does the image in the “404 error” page mean?
The metaphor of broken link image in Academia is a broken bike:
Palu Macil in his answer has made a very interesting idea. It plays on Route not found. So why don't we customize that title too?
Some ideas that I come up:
- Math: No solution
- Stack Overflow: Missing library
- English: Cat got my tongue
If you afraid that the users will be confused, I think we just need to add 404 at the beginning of the title. I think 404 is popular enough to be recognized.
Found this after posting this question: Amusing 404 “Page Not Found” Images for Trilogy sites?