me and two of my good friends were smoking a bowl in a car in a really secluded forest area. the car was on for a while but after we smoked my friend turned off the ignition there was this really creepy sound in the woods like a bunch of zombies eating people.. some thing scary like that, we turned the car on and off again, and we realized it was some part of the engine making a strange sound as it shut off, but we were so high and it was so quiet it freaked us out.. it was actually kind of disappointing...life would be more fun with zombies i think