Answer: Escusemawh? Gurl/Boy Bakuhoe is very underrated if you ask me and no one asked me so im just sayin.
Do both at the same time you dont want to disagree with the person and always usean appropriate level of formality.
Answer:
metaphor? i'm not quite sure if you mean literary device or not. sorry, if this isn't the answer you're looking for, but i hope this helps you :)
Explanation:
The word 'unfathomable' means not able to be understood.
to 'fathom' is to think or ponder on something so as to understand it.