All fans of every team do it. It's because most fans are just the casual fan and can't tell the difference between a fly ball and a homerun. They're mostly idiots. it's also not that easy to tell right off the bat if a deep fly will go or not. A ball hit that deep actually is a HR to certain parts of the field. Why people act all high and mighty about overreacting to pop flys is beyond me. Ye, you want to demote my sarcastic 40's lingo, youngster? By the way, Pafko is so old...