I've had two dreams regarding snakes.
The first one: I was walking through a school and found two snakes. I picked them up and tried to put them in my pocket. They ended up biting me and I dropped them. I ran through the school looking for help. I found a trap door type hatch in the floor and used it. I went down a spiral stair case and came to a kitchen type room. A friend of mine, who happens to be atheist, was in there. He kept trying to talk to me and not help me. I woke up shortly after.
The second one was more recent: It was a dream of me having a vision and then the vision actually happening. I was wearing white in the dream. I was being trained by a good motorcycle gang how to ride. We ended up having to run from a bad gang. I fell behind because I saw one of the good guys needed help. I stopped to help him but then I was jumped by a bad guy in red. I was pushed into some water and two snakes were held to my arm and leg until they bit me. The whole time the guy I thought was good was standing there staring at me. He was in all black and had a very maniacal look on his face. When I woke up I had a sense of peace.