Yesterday (Sunday) while amusing myself at work (damn holiday banquets) I thought about the abrevaiation we all see in everyday (gets vary boring running dishes thru a dishwasher) and how we think og different things for the same abreviations.
For example here on this BBS RB - rubber bumper, CB - chrome bumper at the hotel I work at RB- Roast Beef and CB - Corned Beef. In my real trade (eletronics) RB - is Base resistor and CB either stands for Common Base or Citizens Band. Made it wonder how many other common meanings do we know for the same two letters? As I implied I was bored s**tless.