The wave is a type of metachronal rhythm achieved in a packed stadium when successive groups of spectators briefly stand, yell, and raise their arms. Immediately upon stretching to full height, the spectator returns to the usual seated position.

The 1986 FIFA World Cup was the 13th FIFA World Cup, a quadrennial football tournament for men's senior national teams. It was played in Mexico from 31 May to 29 June 1986. The tournament was the second to feature a 24-team format. Colombia had been originally chosen to host the competition by FIFA but, largely due to economic reasons, was not able to do so, and resigned in November 1982. Mexico was selected as the new host in May 1983, and became the first country to host the World Cup more than once, after previously hosting the 1970 edition.