Worst and most recent injury would be trying to do overhead butterfly (primarily behind head/back) (using fire poi/chains unlit) consistantly without coming back to the front, I had it going for quite a bit, but then I got distracted

one poi head per chest side. (Right near/on my rib cage, both sides) That would have to be the most painful poi injury I've gotten, (aside from bruises - look worse, but dont feel it), it felt as if I got hit very hard by a punch or something on both sides. It was red for a while, and it seemed pretty fine with minimal bruising afterwards.
With staff, throws: brusing on the nail (felt the pain through my index finger though, made finger twirling difficult), and being called by someone only to have the go for your head.
~ Neser