(1) In a man’s dream it may symbolize doubts about his masculinity, or fear of impotence.
If you have a partner, perhaps she is not the right one for you.
(2) In a woman’s dream it might represent a romanticized image of men. Is your sexuality inhibited?
(3) For a woman, it might symbolize your fear that your masculinity might take control of your psyche at the expense of your feminine characteristics.
(4) Alternatively, it may symbolize the union of masculine and feminine sides of the psyche - in man or woman.
[1]