Base jumping
The phrase base jumping泭(the extreme sport of parachuting from the tops of very tall objects, like skyscrapers) doesn’t actually refer to bouncing at the base of a land mass, or pogo sticking around an army base. When followed by the word jumping, 莉硃莽梗or, in its capitalized acronym form BASEstands for Building, Antenna, Span, and Earth. These words are the four categories of places true base jumpers will jump from.