1. Dream symbolism: Black underwear may symbolize privacy, sexual secrets, or the inner emotional world in dreams, while men wearing it may represent exploration of their own or others' hidden side.
2. Subconsciously expressed: This dream may reflect some hidden emotions or curiosity about a certain male, or your thoughts on the underlying motivations behind male personality and behavior.
3. Emotional and psychological mapping: Dreaming of a man wearing black underwear may also reflect your inner focus on themes such as power, control, or desire. Black is often associated with mystery and authority, while underwear represents personal privacy. The overall dream may be expressing your subconscious understanding and feelings towards these complex emotions or social roles.