Quoted from ASOA:Clark W. Griswold Jr.: Hey! If any of you are looking for any last-minute gift ideas for me, I have one. I'd like Frank Shirley, my boss, right here tonight. I want him brought from his happy holiday slumber over there on Melody Lane with all the other rich people and I want him brought right here, with a big ribbon on his head, and I want to look him straight in the eye and I want to tell him what a cheap, lying, no-good, rotten, four-flushing, low-life, snake-licking, dirt-eating, inbred, overstuffed, ignorant, blood-sucking, dog-kissing, brainless, dickless, hopeless, heartless, fat-ass, bug-eyed, stiff-legged, spotty-lipped, worm-headed sack of monkey shit he is! Hallelujah! Holy shit! Where's the Tylenol?
"I think you're all fucked in the head. We're ten hours from the fucking fun park and you want to bail out. Well I'll tell you something. This is no longer a vacation. It's a quest. It's a quest for fun. You're gonna have fun, and I'm gonna have fun... We're all gonna have so much fucking fun we're gonna need plastic surgery to remove our goddamn smiles! You'll be whistling 'Zip-A-Dee Doo-Dah' out of your assholes! I must be crazy! I'm on a pilgrimage to see a moose. Praise Marty Moose! Holy Shit!"
... this too:
Ellen: I honestly don't think you're going to find the Grand Canyon on this road.
Clark: Jesus, it's only the biggest damn hole in the world.
Aunt Edna: Clark, watch your language!
Clark: Make that the second biggest.