Haha. Me and my buds play tricks on eachother when we're high. It's all fun and games though and if anyone starts getting mad or scared we stop it.
One time we really scared one of my best buds. All four of us were driving in the car, and three of us just stopped talking all of a sudden and only mouthed words to eachother. We just kept talking with no noise coming out for like 5 minutes. At the end my friend believed he had gone deaf or something. It was so funny when we told him we were just playing.