Gatsby is nervous about meeting Daisy at Nick's place. He is panicking and Nick tells him to stop acting like a little boy. 
        
             
        
        
        
An author who uses more informal diction knows he is writing for an audience of varied intelligence
        
             
        
        
        
Clean, brown, he, Soon, fresh, wet I don’t know about the last one, but hope this helped you
        
             
        
        
        
Metaphor because you are comparing two things but not using like or as