* Express excitement or enthusiasm: Imagine someone scoring a winning goal in a game, and they shout "Shakalaka ding dong!" to express their joy.
* Add a comical element to a situation: It can be used as a funny exclamation, kind of like saying "Woohoo!" or "Bada-bing!"
* Be a playful call and response: It's sometimes used in a back-and-forth manner between friends, almost like a silly chant.
There's no real origin story for the phrase, and it's likely just a made-up phrase that has become popular due to its fun and nonsensical nature.