Question

What figure of speech is used in 'so, some of us had two worlds'

Answer 1

A hyporbole is being used 

hope this helps

Answer 2

The figure of speech used here is a Metaphor.

A metaphor is a figure of speech that says that one thing is another different thing, so here it is being said the 'some of us had two worlds' meaning that they are living two different lives at the same time.