National Lampoon's Christmas Vacation is a 1989 Christmas comedy film directed by Jeremiah S. Chechik. It is the third installment in National Lampoon's Vacation film series, and was written by John Hughes, based on his short story in National Lampoon magazine, "Christmas '59". The film stars Chevy Chase, Beverly D'Angelo and Randy Quaid, with Juliette Lewis and Johnny Galecki as the Griswold children Audrey and Rusty, respectively. Wikipedia
Clark: Where do you think you're going? Nobody's leaving. Nobody's walking out on this fun, old-fashioned family Christmas. No, no. We're all in this together. This is a full-blown, four-alarm holiday emergency here. We're gonna press on, and we're gonna have the hap, hap, happiest Christmas since Bing Crosby tap-danced with Danny fucking Kaye. And when Santa squeezes his fat white ass down that chimney tonight, he's gonna find the jolliest bunch of assholes this side of the nuthouse.