While this is a dream, it was really livid, and this is the closest I ever got to crossing the boundaries between dream and reality:
I had a dream when I was 13 that the science teacher brought to the school for a demonstration this really big poisonous snake. Said snake got loose, and started biting everyone, even the instructor. Everyone was fainting and dying, and when it finally bit me I woke up immediately. The really scary bit is that where it bit me I had similar puncture holes, and the next day at school the science teacher showed us all a picture of the exact same ****ing snake and how she planned to bring it to school. Scared the **** out of me, and I still can't believe what I experienced.