Being a black market success doesn't mean eschewing advertising - it just means broadcasting your services in subtle and ingeniously unconventional ways. That, apparently, is why a lot of modern-day drug dealers have turned to business cards.
Since the acid renaissance of the 1960s, unique business cards (and celebrity business cards) have been something of a cult sensation. However, instead of exuding professionalism, many drug dealer business cards in the 21st century are downright hilarious in their underground allusions and/or blatant crudity. You just have to know what you want, and what you're looking for.
Check out the below cards, and vote up the most hilarious ones.