Forbidden funk or proibidão is a subclass of funk music, produced mainly in the slums and hills of Rio de Janeiro. The present dissertation analyses the contents of proibidão lyrics and shows that this musical phenomena is a product of the joining of funk with drug dealing groups which dominate those territories. Such production seems to be used by drug dealers in broadcasting their ideas and exalting their actions, strengthening the faction members´ identity, expressing their hatred and causing terror to their enemies. Such criminal groups use two strategies to spread their purposes: producing and selling forbidden funk CDs and promoting community dance parties, which serve as much as entertainment for the local youth as for selling drugs. In both cases, the role of MCs is indispensable for issuing such product. Forbidden funk, peculiar by the symbolic aggressiveness, besides being adored by young people, presents-itself as a weapon at the service of drug dealers, used as business card and speaker on behalf of their interests.