Flies are the stupidest insects EVER. I leave the window wiiiiide open for them to fly out of and go back to their real home in nature, and what do they do? Land ON the stupid window! You have gigantic eyes, use them!
Today two small flies were in my room. I looked up from marathon packing and saw these two little black dots flying around in circles, then dive bombing, then popping back up and flying close to each other.... couldn't figure out of they were trying to mate or having a fight. They were of course not smart enough to see that the window was open and they could fly right back out the way they came, but they did amuse me for several minutes and provide a respite from packing.
Packing = sucks.