By Brian Winter SAO PAULO (Reuters) - It's the catchphrase of the year in Brazil: "Imagina na Copa!" The Portuguese phrase, which basically means "Imagine what it'll be like during the World Cup," has become a favourite among Brazilians stuck in traffic, or in line at their woefully overcrowded airports. The underlying belief is that the chaos will be worse when Brazil hosts the football tournament in June 2014, and hundreds of thousands of foreign visitors fly in to see the games.