A musical scene from a film that has little or no bearing to the plot, comes from pretty much out of nowhere, and after it's finished, no one ever speaks of it again.

This can also be used when you and your best friend do something completely random, decide that it makes no sense, and vow to never speak of it again.

Originally found in the Nostalgia Critic/Nostalgia Chick review of "FernGully 2," some of these moments are:
-The Pink Elephants from "Dumbo."
-The song at the very end of "All Dogs Go To Heaven."
-The tunnel scene from the Gene Wilder version of "Willy Wonka and the Chocolate Factory."
Kate: So, how was the play last night?
Peter: It was okay. Herp Derp.
(Then the two just start derping for a while.)
Kate: Well, that was quite a Big Lipped Alligator Moment. Let us never speak of this randomness again.
Peter: Agreed.
by fandomgirl92 June 11, 2013
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Something you say when you intend to say goodbye to someone and come out of the closet at the same time.
Fred: "Well I'm gonna get out of here. Later dogg."
James: "See ya later, alligator."
Fred: "Oh, so that's why you work at Banana Republic. Man, I always thought you were just a flaming metro."
by Nick D January 26, 2004
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First, venture deep into South America and find that bangin' South American girl we all dream of. Now you found her, follow these simple instructions. While receiving oral sex from your partner, stick your thing all the way down her throat. Gently cup their chin as if you were going to pick her head up and kiss her. Place the other hand just above the forehead almost as if you were going to say, "shoulda had a V8." Next, simultaneously push her jaw together in a chomping motion while your penis is still in their mouth. Finally, blow your load of bloody jizz into her mouth. There you have it, the South American Alligator Chomp.
Roscoe: I was fuckin' around in the Amazon the other day and I saw this hella fine Venezuelan bitch.

Jeremiah: You tap dat shit?

Roscoe: Nah, she just gave me the South American Alligator Chomp.

Jeremiah: Tight!

Black Man: Stop talkin like you black, nigga yo name is Jeremiah fo niggas sake.
by KaMaSuTrA xX February 09, 2009
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First the babay shits in the girl's pussy then as he is doing this the girl does an extroadanarily hard position to sock the little boys cock while it's crapping. Then they start rolling on the ground preferrably down a large hill.
:1st person:I Hot Alabama Alligator Baby Brother Blumpy Fuckhouse Pocket'd the shit outa that little baby yesterday.:2nd person:What.
:1st: Yeah Alligator Alabama Baby Brother Blumpkin Fuckhouse Pocket'd the shit outa that little kid.:2nd: Wtf is that? 1st Person: Well it's when (Recites defenition):2nd:I don't think we can see each other any more:1st: Your jealous.
by Justin Carter February 26, 2007
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When a bitch pokes her head out of the water like an alligator and you shoot your load and she catches it in her mouth, like an alligator.
That bitch so wet i gave her a north Dakota alligator in my mom's swimming pool.
by Muhfukindevon August 06, 2020
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A strip of tire recap that flew off a semi truck lying on the berm tread side up appearing as an alligator skin.
Wow! Check out that Pennsylvania alligator, must be six feet long!
by SKIVVY 9 May 13, 2018
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