I didn’t come here for a hair cut
This is like when you're not there for the fluff. You're there for the meat and potatoes. If you don't get it, you're going to get very angry.
He walked into the office and said, 'I didn't come here for a haircut, I came for the money.'
She showed up at the class and said, 'I didn't come here for a haircut, I came for the knowledge.'
He walked into the gym and said, 'I didn't come here for a haircut, I came for the sweat.'