It's a common phrase in everyday conversations, especially when asking for clarification or further explanation.
Here are some examples of how "ko da" might be used:
* "Ko da, wo yɛ biribi?" (What is it, are you doing something?)
* "Ko da, ɔbaa yi?" (What is it, this woman?)
* "Ko da, ɔkɔɔ he?" (What is it, where did he go?)
It's important to note that the tone and context of the question can affect the meaning. "Ko da" can sometimes be used in a surprised or questioning tone, while other times it can be used in a neutral or curious way.