The "coworker" should have been me

BOSS (to my coworker): “Wow, you look spiffified! You look really good!”

COWORKER: “Well, it’s like they say, if you want to feel good at work, you have to look good at work.”

BOSS: “Oh, that’s a really great attitude! Glad to see it. Do you feel good?”

COWORKER: “Actually, that was just a joke. I have a job interview today.”