Here we go:
1) Tshirts that say "keep Calm". Keep calm and drink a beer.ETC
2)The Phrase YOLO..."YOu only live once"
3)Mustaches. Enough said.
4)Using instagram to make all your photos look vintage
5) Vampires and Zombies
7) Wearing glasses when you don't need them
I agree with all of these especially number 5.