The fact that the adornment itself is a reminder of the breaking of the flesh that it took to create it is a part of the message inherent in this particular brand of self-expression and appeals to young people and a fringe of subculture in society.
If you are someone with piercings, such an image in a dream may simply be a reflection of your personal worldview. However, if such a look is outside of your milieu, there may be a call toward attending to something that relates to the area of your body that is being pierced.
A tongue relates to your voice and things you would like to say.
A navel is more connected to gut feelings and your instincts. Your ears indicate a need to pay more attention to the messages that are being presented to you.