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. [1]
If you dream of someone else getting pierced, it indicates jealousy of that person or something they have.
If you dream of getting your tongue pierced, it could mean you have been gossiping or lying and you should stop. [2]
2. An act of social defiance or conformity, depending on one’s attitudes toward piercing.
3. Regrets over harsh or “sharp” words said out of turn (to have a pierced tongue or lip). [3]