(the birth of "Yippie-Ki-Yea" (which in the song is actually Whoppie-Ti-Yi-Yea), which led to Bruce Willis' infamous "Yippie Ki Yea, motherfucker!" after Hans Gruber (played by Rickman) accuses him of being a cowboy in Die Hard. https://www.youtube.com/watch?v=pEOVNmSR7_c)