There isn't a "hidden meaning" as such, but the puzzle plays on our expectation of reading words in a specific direction. By reversing the word, it forces us to think differently and recognize the familiar pattern.
This type of brainteaser can be a fun way to:
* Test our attention to detail: Do we notice the reversed letters?
* Engage our problem-solving skills: Do we try to decipher the word or think of words that sound similar?
* Challenge our assumptions: Do we automatically assume words will be written in a specific way?
Ultimately, the "hidden meaning" is the act of the word being reversed, highlighting the way our brains process information and our tendency to follow patterns.