In one DT class earlier this year we were soldering (I can't remember what we were making). Anyway I was having some trouble with it so I asked my teacher for some help, so like the dick he is he walked over to me after a long while and slapped me on the back when asking what was wrong. I was still holding the solder and ended up pressing it into my arm, still got the mark.
A little after that particular incident but still in the same lesson I went to talk to him to report that one of the soldering irons wasn't working. I have hayfever like a lot of people and was prone to violent sneezing and when I sneeze standing up I have a literal knee-jerk reaction where I do the action of well, jerking my knee, and I was talking to him when I sneezed and kneed him, rather hard and he got rather annoyed with me as well.
Later in that lesson (Oh yes there's more, This really wasn't my day was it) I'd finished soldering the circuit board and was walking across the class to get more materials then I tripped over (I'm quite a clumsy person). The board got stuck on my face with slightly liquid metal that was solid enough to stick to me, they actually had to bring me over to the solders and burn it off my face, I might've passed out at some point in there. So. . . .eventful lesson!