Couple years back I took the car to get fixed. My parents had drummed into me the need to get to repair places right when they opened so I would be first in line. I've since learned that at most places the mechanic doesn't show up until 9, so you may as well get another couple hours of sleep instead of hanging around reading 7 month old Newsweeks and watching Judge Judy on the crappy repair place TV while wondering how much all this is going to cost.
After a couple hours of waiting around I figured I'd walk down to this diner and get some breakfast.
As I opened the door all conversation stopped and everyone turned to look at me. I felt like I just walked into the saloon and was going to start a shoot-out. I determined that I was the youngest person in the place by like 50 years, and had probably interrupted some Masonic ritual or spirited review of last week's church social.
After the oldies vibed me out, they went back to eating, but I could tell they didn't take kindly to this young buck taking up valuable space in their establishment.
Later that week my wife and I went to see TV on the Radio at Freebird Cafe, where we were the oldest people by about 15 years, so I suppose it all evened out.