I dreamt that I was helping to clean out my Grandma's apartment. When I got there two ladies were already cleaning the main part, so the door was unlocked. They said the only thing left to do was the basement, so I started heading down there. Once on the stairs, I heard 'Hey'. I went back to the main part and asked the ladies if they said anything. They did not, and I said I heard 'Hey'. They said the basement makes strange noises.
So I went back and heard 'Hey' again, and proceeded down the stairs. Turns out the person saying 'Hey' was a Mexican, and only spoke Spanish. I didn't want to make a fool out of myself by trying to speak Spanish, so I started speaking gibberish that sounded like French and German. This really confused him, so I kept doing it until he said he got a disease from a hypodermic needle, which he then showed me. He tried to wave it around at me and brush it against my arms, so I finally started speaking English at this point and hiding behind the washer & dryer. I grabbed a wicker waste basket and whacked him over the head with it. This made him really mad and he then stabbed the needle into my thumb, which started bleeding. I got mad and slit his throat, and ran back upstairs.
When I got outside, all the other Mexican were storming the building and tearing pieces down. When the building got down to just a steel frame, it collapsed on them, and the ground opened up, causing all the people to slide down a dirt crevasse into the ground. I thought that was ironic, but they got up again, and started bringing their dead to stretchers, which resurrected them as zombies.