Before Twitter, there was CB (Citizen's Band) Radio. Citizens band channels are shared by many users. Only one station may
transmit at a time; other stations must listen and wait for the shared
channel to be available. That's when you said, "Breaker, breaker!"
CB operators had handles before Twitter.
After the 1973 oil crisis the U.S. government imposed a nationwide 55 MPH speed limit, and fuel shortages and rationing were widespread. CB radio was used (especially by truckers) to locate service stations with better supplies of fuel, to notify other drivers of speed traps, and to organize blockades and convoys in a 1974 strike protesting the new speed limit and other trucking regulations. That's when people invented their own nicknames, or "handles". Betty Ford, the former First Lady of the United States, used the CB handle "First Mama"
Yes, children. And this # used to be called the lb. sign, as in 140# Cold Press Watercolor Paper.