To dream that you see or are a boy, when you are female, implies that you are in touch with the male traits of your personality. This dream may also symbolize how you feel about a prominent male in your life. Romantic feelings towards him may be transferring into your dreams. You may also be feeling nurturing and caring towards this boy.
To dream that you see or are a boy, when you are an adult male, indicates that you have a fun, energetic, and youthful side. It can also reflect undeveloped portions of your personality that you need to work on. There may also be attributes of your character that you don't yet realize or understand.