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The WBST, or World Butt Sex Train, is a school of thought. It pertains to the idea of an anal sex train so long, that the last person in the sex train is getting penetrated by the first person in the train, thus wrapping the entire globe in a world buttsex train.
As of 2020, the modern world still strives closer to a WBST. Though not yet seen in the wild, a functioning WBST would likely span the strait of Gilbraltar, the Bering Strait, and the Panama canal, and consist of over 500 million men.
by Richard Feynman, Ph.D March 10, 2020