First time, my front wheel got stuck but I didn't stack.
Second time, it was wet and I went down like a ton of bricks, but luckily my head broke my fall.
Trip to the Alfred, facial grazing, four stitches across the right eyebrow, badly bruised ribs, fractured right cheekbone. I had no feeling in my top right teeth for about 12 months due to nerve damage.
All good now though!