Working at the assisted living facility, I have noticed among some of the kitchen workers -- the middle aged ones, I think -- the tendency to refer to people present as "this one." I don't speak this way, and I wonder how they acquired this habit. Is it generational and regional? My parents never said that. Or generational, regional, and class-specific (as in, working class).
Often it is used in situations of mild joking or ribbing, as in, "This one decided not to come into work yesterday."
It reminds me of the Indonesian usage: "yang ini."