The word of the day is acnestis, which is that part of your body you're unable to scratch... is there a word for the part of your body (back) you can't reach to put on sunblock? I like to play watersports and I always have to ask people to put sunblock on the middle part of my back that I can't reach, but it would be great if I could say, "Could you please put sunblock on my ____" instead. Thanks everyone!