its a long story, one i had to explain to the police many times lol.
it was about 2 grams of flash powder, i was using tiny sprinkles from bag for fire to make marshmallows. from what i gave a large bit from bag went into fire and brought up enough flame to blow bag making loudest bang,
i got knocked back, and kinda passed out i think, i didnt know what happened i couldn't see or hear. but yea look at hand after awhile and saw that my thumb was like hanging off my wrist and there was blood all over me and pumping out my hand. lol