Haifisch
When something is so trendy in Hamburg that even your grandma wears neon pants and says 'yolo' in German.
'My cousin got a Haifisch haircut and now he thinks he’s a rockstar.'
That new café in Hamburg is so Haifisch, even the coffee has a sideburn.
My teacher said, 'If you don’t stop being Haifisch, I’ll fail you.'