After an extended bout of flu over Christmas my first night ride of the year ended in disaster when a patch of black ice on the descent of Dunain hill up ended me and brought me down hard on my rear. I lay still for a long time in the darkness badly winded and moaning before heading down the hill gingerly. Funny - it was the same ice that I passed on the way up and thought that I had better avoid on the way down.
No bones broken but a few lessons learned. Ice is not sticky but it is quite hard.