<human>:  Where did the bike brand ‘BMX’ originate?
<bot>: Bmx stands for bicycle messenger. It was invented in the 1970s in San Francisco. The brand was originally owned by a company called Bicycle Messenger Service, which was founded by a man named Gary Fisher. Fisher was a bicycle messenger who wanted to create a bike that was more comfortable and easier to ride. He designed the bike with a flat handlebar and a low seat, which made it easier to ride. Fisher also designed the bike with a front wheel that was much smaller than the rear wheel, which made it easier to maneuver in tight spaces.