I don't know dudes, I've heard stories about the teenagers who go to World Youth Days. Imagine noob teenagers, homeschooled, cloistered away from video games and TV and whatevs by their puritanistic parents. When they go on a pilgrimage to meet the Pope, they're away from their parents, and around other teenagers their age, and the legal drinking age in the country is lower than in the US.
Do the figures.