Good Morning, Coffee Cup

This year, with a new teacher in second form, and one who cherishes his coffee, some of us other teachers began the practice of bringing him his morning cup, since he can't leave a room full of 8-year-olds alone and seek it himself.
One of the cups at school is about 20 ounces big, white, and has huge black letters saying "GOOD MORNING." Because the students are supposed to stand and greet adults who enter the room, I would try not to walk all the way in, not to disturb Father Baker's class too much. One morning I handed this particular cup through the slightly opened door, and was about to leave again unobtrusively. Imagine my amusement when the whole 2nd form arose reverently and said, "Good MORNING, coffee cup." It must be Father Baker's attitude rubbing off on them.