Or the way people designate an age for something by pulling a date, out of their ass.
General rules: the younger they are, the older the item.
The older they are, the younger the item.
If this were a twenty year old this DW "it's like, from WAY BACK in the 1960s, or something..(duh)"
If it were a senior "Its a really nice machine that can't be more than ten years. Yeah, It was probably made the same year as my Oldsmobile regency 98."