A few weeks ago one of those hover flies that look like a bee or a wasp flew into my flat. Usually I would just open the windows and wait for it to leave, but this one was large and annoying, so I grabbed an empty tissue box and swatted the thing as hard as I could. When I went to find the thing to throw it away, I found I had obliterated its body, so only the head remained with legs attached to it - BUT IT WAS STILL ALIVE!. It was crawling around the carpet with no body like something out of Dead Space. It was so disturbing - it had absolutely no body, it was just a head on legs walking around.