I swear this just happened to me. I was like "Jeez what the he** else can go wrong!".
I was skating my chair across the lab while wearing sandals to the lathe... I must have picked up static electricity cos when I touched the machine I got a shock that made me jump and drop th lens I was carrying. I bent down to pick it up and all the pens in my top pocket ended up on the floor. Thre lens ended up under the machine- reaching under it I slipped on the bloody pens and bashed my head and stubbed my foot on the machine!.
Bad Machine Bad!