Me and my friends are making a shooting video, and I am the special effects manager. I need to know how i can make it look like someone was shot. I need it to be an explosion, but with out it being too dangerous. I was thinking fake blood in a plastic bag, and a nut attached on the inside. and have it come through a hole in the bag. and then a string and so when he has the que, he pulls the string, and it makes it look like he was shot. Any other ways???