Acronym, probably originating in the USA standing for Born Again Biker. This refers to a person, usually male in their forties or fifties, who goes through some sort of
mid-life crisis and buys themselves a huge and expensive motorcycle, together with shedloads of gear and takes to the road in an attempt to recapture their lost youth. This is invariably a failure and many of them get over it in twelve to eighteen months, some of them, however, become
traffic accident statistics.