The SquawkBox On The Wall
It seems as though whenever some announcement is made over our school's public address system, I'm usually speaking to my class. Invariably, it happens when I'm in mid-sentence and is always good for a chuckle from the kids.
Polski3 shows us how a little proofreading can go a long way toward avoiding Public Address Embarrassment.
Back in my own school days, we used to call it the "Bitch Box."