First, I do not believe his friend tried to stop him, really they were drinking, and next you know there is a video some where.
I am betting he loaded it the wrong way, with the load facing up verse down and it launched into his head verse upwards. I have seen that happen, someone load the firework upside down and when it goes off, it will blow a hole in the ground when you do not mount the motar tube to you head.
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