My heel is also something of a weak spot. I had a certificate of some kind - not a memory competition thing, some kind of work-related rubbish, that was in a glass frame, which got buried under a pile of old papers and things in my spare room, and a little while ago I accidentally trod on it and shattered the glass. I didn't bother to pick up the pieces, because I decided they were safely trapped under the general refuse in my spare room and wouldn't bother anybody until I was in more of a tidying kind of mood.
But there's a sort of slow tectonic movement to the darkest depths of the junk in my room, and a big pointy glass shard ended up protruding from the pile of papers, and stabbed me in the heel while I was sitting at my desk today. It really hurt. So I've been forced to clean the place up a bit, and get rid of the deathtrap.
27.77(X), 26.63, 30.44(X); 2:54.93; 5:27.03/405/80; 8:11.07/1225