I'm a teacher at a different sort of school. It has an open floor plan like a mini mall. There are couches, chairs, and such. I'm leading an exercise for class. They are moving through various stations or gates. They have to complete a test or question to move to the next station or gate. As I observe a young man at one station, he gives the wrong response. I use a wand to block his progress. As it does so it gives an audible noise. He is disappointed but is playful about it.
Later I'm walking alone. I put a cracker in my mouth. I realize it's moldy and spit it out.