I don't understand the mentality of flys. There's a fly in my apartment and we could co-exist just fine if it would stay on the wall, land on and eat left overs or crumbs. But no, this stupid little fly needs to keep buzzing by my head, landing on me and in general trying to be the biggest pest it can possibly be. So now it has my full undevided attention and I'm not going to rest until i sqush every last ounce of life out of it.
