This is a poem that is written in free verse using many metaphors (comparing two unlike things without using like or as). Free verse means it is free of limitations of a regular meter or rhythm, and does not rhyme with other words in a set line to line format. An example of a metaphor: The sun was a smiling face bringing cheer to the world. The sun is being compared to a smiling face.
If hes just being rude, honestly just stay in your room or something until he leaves, or maybe even tell your brother about it so maybe he'll say something to the friend. if he keeps bothering you even after all that, just tell him to leave you the FU€K alone. best of luck!!