I believe the following dream is a direct result of a night's worth of reading about drugs at everything (Essential Psychedelic Guide, DXM, etc) and various other websites (Erowid).
Most of my extended paternal family is gathered in a strange split-level home that I have never been in before. This is my grandma's house, and we are all gathered here for my cousin's birthday. My cousin lives with my grandma, and in this dream is a huge drug dealer.

I go down to the suspiciously large lower level to find my brother, on the computer, playing what he claims to be the Diablo II Expansion Pack. However, it is obviously not Diablo II. On-screen, both his avatar and his opponent look like clay figures. He fights with the opponent in what is probably the most BAD ASS kung fu sequence ever envisioned. It is incredibly fast and intricate. Mindblowingly fast. I have never been so amazed. I then learn that he is using cheat codes to speed the game up and am crushed to learn it would never be that badass in the actual game.

I go upstairs and have a kind of flashback. I remember that I am dear friends with an old man who also happens to be a hilariously huge drug user (for an old man). I remember that he is going to show up today, give me some money, and then I am going to buy some drugs from my cousin for him. It's better business that way.

I go outside to look for him. My childhood best friend's older sisters show up, who are hot, and walk inside without a glance at me. The old man is suddenly there with his cane. He looks just like an old man that used to frequently come in the restaurant where I used to work. We hug. He shows me a check (who pays for drugs with a check?) with some amount of money and tells me to buy him two things, which I immediately forget. I am about to go inside to try and buy the drugs anyways, but I wake up.