fly on the wall

So, today I was working here at the lovely home office, contemplating a lovely sky caused by a chinook wind that has temps near 50 above. One week ago, it was 40 below here. Something moved on the window. Looked up, and there was a large black house fly, creeping along as if he'd just gotten up from a nap. And he was on the outside of the window. I'm sorry, but that's a miracle.