How about "Deer don't look up".

LOL...I swear, maybe it's just me, but it seems like all the places I hunt....they walk along looking around and up almost always. I got picked out last weekend by a doe that had no idea I was there, I didn't move, the wind was in my favor and I was 20 feet up in a tree with plenty of cover...that I had never been in before. She stopped, looked around, and then up into the trees...scanning the area. When she got to me...she locked on me, freaked out a little, and ran about 20 yds and stopped and looked back. Then went on feeding...LOL...

I'm sure any of you who have hunted a while have seen this happen. It seems like it's only gotten worse over the years...like it's bred into them now. 15 years ago, it didn't seem to happen very often.