Internet crazy fun--the concept of people finding old photos showing time travelers wearing or holding things that are not of their era.
Now, the dude down below looks really vastly different than his companions of that era. Look at the sunglasses, the hoodie looking coat, the hatless head? All of it is of the time period, but he just doesn't fit in with his crowd, kind of like me at a West Virginia family reunion.
Below is the pic and a picture of Lady Gaga amongst nuns; all of the same time period, she just is a different type of person of our time period. I'm guessing Mr. Hipster below is just too hip for his friends (or too young for that crowd). There is also a picture of Larry King amongst Hips Hop Dancers; same time period, different types.