The real reason behind the Limbo? In Trinidad, it’s part of the funeral ceremony. Mourners would walk toward the pole and attempt to move under the pole without knocking it over. Yes, it’s difficult. This difficulty is said to symbolize the difficulty of the journey to heaven and that difficult period of Limbo between Heaven and Hell. Clapping and chanting mourners would take turns with the pole being lowered towards the ground.
American tourists fell in love with the dance (not necessarily the reason behind it) and a new craze was born. It was helped into nationwide attention in the 1960 movie Where the Boys Are. By 1963, the Limbo was replaced by Beatlemania.