Arena shouts are a type of cheer or chant that is often heard in sports stadiums and arenas. The two most common arena shouts are 'Oles' and 'Rahs, ' which are both four-letter words. Oles is a cheer used to show support for a team or player, while Rahs is a cheer used to show enthusiasm and excitement. Both cheers are typically shouted by the crowd in unison and can be heard echoing throughout the stadium.