The saying "What sounds good doesn't always taste good" suggests that things may not always be as appealing or enjoyable in reality as they seem or sound in anticipation. This concept can apply to various aspects of life, including food, experiences, and relationships.

In the context of bats, this saying could be interpreted as a caution against relying solely on echolocation to determine what to eat. Bats use echolocation to navigate and locate prey, but they cannot taste or smell their food before consuming it. As a result, they may sometimes catch and eat things that do not taste good or are even harmful.

This saying serves as a reminder that it's important to be open to trying new things, but also to be cautious and discerning in our choices. Not everything that seems appealing may ultimately be satisfying or beneficial. It's a good idea to consider various factors and gather more information before committing to something based solely on first impressions or external appearances.