This is done sorta like whos line is it anyway, start saying something, dont complete your thought, leave someone else to finish what you would say. for example
Person 1: So, I was walking down the street one day and I saw (endpost)
Person 2: an exact replica of an elements card, so I picked (end post)
person 3: up the rock lieing next to it and tried to carve (end post)
person 2: the card into the ground by beating it repeatedly (end post)
ect ect ect
Use your own discression on where to cut of your message, it can be in a logical or illogical place.
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***illegal command*** was building a gravity deck one day, when all of a sudden