Crazy Train was released in 1980 as the lead single from Ozzy Osbourne's solo debut album Blizzard of Ozz, after he left Black Sabbath. Its opening seconds, the shouted All aboard and maniacal laugh, became one of the most quoted intros in heavy metal. The song stayed a stadium and soundtrack staple for decades, and online the intro was clipped on its own for memes. Editors reuse just those few seconds as a universal signal for departing, charging in or losing control, separate from the full track.