What are your favorite parts from movies that have you dying laughing every time you see it? The movie doesn't have to be great, just a scene that makes you laugh like crazy.

1. "Caddyshack"...This is a great dialogue by Bill Murray as Carl Spackler: So I jump ship in Hong Kong and make my way over to Tibet, and I get on as a looper at a course over in the Himalayas. A looper, you know, a caddy, a looper, a jock. So, I tell them I'm a pro jock, and who do you think they give me? The Dalai Lama, himself. Twelfth son of the Lama. The flowing robes, the grace, bald... striking. So, I'm on the first tee with him. I give him the driver. He hauls off and whacks one -- big hitter, the Lama -- long, into a ten-thousand foot crevice, right at the base of this glacier. And do you know what the Lama says? Gunga galunga...gunga -- gunga galunga. So we finish the eighteenth and he's gonna stiff me. And I say, "Hey, Lama, hey, how about a little something, you know, for the effort, you know." And he says, "Oh, uh, there won't be any money, but when you die, on your deathbed, you will receive total consiousness." So I got that goin' for me, which is nice.

2. "Airplane!"...Its hard to pick a favorite from this one, as there are several scenes that have me dying laughing. If forced to choose, I would say the scene where Lloyd Bridges says out of nowhere "Looks like I picked the wrong week to stop sniffing glue!"
3. "Dumb and Dumber"...The Sea Bass (former NHLer Cam Neely) subplot. When that random guy yells "Kick his ass Sea Bass!" I lose it.

4. "Happy Gilmore"...I love it when Barker and Sandler start fighting. I realize its pretty easy humor, but I can't stop laughing watching this.
5. "National Lampoon's Christmas Vacation"...This dialogue between Chevy Chase's character and the snobby neighbor and his wife (Julia Louis-Dreyfuss) cracks me up:
Todd: “Where do you think you're gonna put a tree that big?”
Clark: “Bend over and I'll show you.”
Todd: “You've got a lot of nerve, talking to me like that, Griswold!”
Clark: “I wasn't talking to you!”

6. "Office Space"...The scene where they beat the
[email protected]#t out of the fax machine/printer; good stuff.
7. "Strange Brew"...The entire segment where Moranis and Thomas's characters are in the courtroom.

8. "Super Troopers"...The scene where the crazed redneck is supposedly having sex with a bear is gold.

9. "The Naked Gun"...Lots of good stuff in the "Naked Gun" movies, the queen scene was pretty funny.
10. "Clerks"...The video store clerk lists out the loud the most indiscreetly named porno titles in history, with a kid watching.
Honorable mentions...or little yucks that I picked up on and consider underrated.
There is a painting in "The Royal Tenenbaums" that is the funniest thing I've ever seen. Its a bunch of guys on ATVs wearing tribal masks. I don't even remember whats going on in the foreground, I just love that awful painting.
Another good scene is when the cheesy 80s guy opens the doors to his Delorean in "The Wedding Singer" and the Miami Vice theme comes booming out.
I know I'm forgetting a few gems for sure and most off of the top of my head are relatively (after 1980ish) recent movies...What are some of your favorites scenes? Again it doesn't have to be a great movie, just a scene that cracks you up.