Happy 30th birthday, Ferris Bueller’s Day Off. John Hughes’ iconic coming-of-age story, “an ode to the wisdom of youth,” has come a long way since the days of skipping school. In May, the movie returned to cinemas nationwide for a 30th-anniversary event. And today marks the film’s original 1986 release. Roger Ebert called the film “one of the most innocent movies in a long time, a sweet, warm-hearted comedy.” While we’re looking back on all the best parts of Bueller and the gang, here are 15 facts you might not know about the teenage wise-guy tale.