Many years ago in our last house, a rather odd chap came to fix an aluminium carpet-edger across the sitting-room doorway. He screwed it down, but managed to 'miss' quite a bit of the carpet edge. When I pointed this out, he began a most peculiar kind of 'tap dance' in front of us, declaring, "I used to love tap-dancing, and it's VERY good exercise!" Our jaws dropped as he continued to cavort about. We still giggle about him!