1. Gather a few willing people (no more than 3, including yourself)
2. Target a random stranger.
3. In order, over the course of the day, have each person bump into them and say the following: 1st. Wake up, 2nd. You're in a coma. 3rd. This isn't real.
4. After saying your phrase, walk away and pretend it never happened.
Fun Fact: When whales pass gas, the underwater bubbles that are formed can be large enough to enclose a horse. If that much gas was ignited, the explosion would be about 5x as big as a molotov cocktail.