I pass my co-worker in the dining room as he's carrying plates to a table. My eyes widen, but my hands are full and I can't stop him.
I pull him aside by the bar. "Hey, you have something on your face. Under your nose..."
Another colleague whisks by, chuckling as he overhears me - "Is it white, or is it red?"
He dashes to the bathroom to check out the situation. Returning, nose clean, he assures me that it was only icing sugar - he'd been munching on desserts. I nod skeptically at the man who has been on a diet since January.
Two nights later, I notice the same problem again. I don't bother to say anything this time.