Deciding that a wet fireman's pole (fnarr, fnarr!) was the best way to descend a 2-metre-high children's climbing frame in the rain. There was a rope down, there was a slide down, but no, I had to take the pole. As soon as I put my full weight on it, I inevitably slipped and my torso rapidly descended, leaving my legs to buckle very painfully at the knee and my entire weight to fall onto my ribs, breaking 3 of them.
Oh, and it was in Budapest, where the hospital was decidedly third world.
And the ambulanceman's diagnosis of broken ribs was to give me a hug to check.
And I had to go to the ante-natal ward (in an ambulance over many speed humps - in agony) to have an ultrasound to check for internal injuries. Joy!