Wiley, one of my most memorable flights was in New Guinea, on a Twotter, single pilot ops, taking six police boys to Buna, when the peace was shattered by a exploding head door, followed by a police boy flat on his back who came straight up the aisle and stopped at my feet. He was in severe pain, and was passing out every so often, he couldn't talk, so all I could think was snake. Not the first time they had got on the aircraft, so I told the other boys who were quite frightened not to go near the head, and called for assistance on landing, and then the ground engineer and I (holding axe) carefully went into the head, nothing, so wondered if the thing had gone down the bowl, but no sign, so had a good look around but could see nothing, then I saw the battery lid was open on one side and it was wet, and realised the poor bugger had taken a p#ss it had gone onto the battery, and he got a charge straight up the ol$ fell@, well it made the eyes water on both the engineer and me, and we decided a beer was in order. I went and checked on him at the bush hospital, and that was exactly what happened. Was always careful to check the twotters battery cover after that.