Oh, the good 'ol days, when everyone was a 4-minute miler. Once overheard a co-worker tell a couple other co-workers that he's "not as in good of shape as when he was younger, but can still run a 4-minute mile" (he's in his 50s).
Local 5 mile race around here. local public access TV picks it up, with a guy commenting from the back of a pick up truck. The lead pack goes through 2 mile ( and I'm not making this up) in 10:10, and he says to the other commentator "right now, they're running about 4 minute miles.."