It's a relatively new expression that means something big and fun is going to happen slowly but surely. It's an updated version of Badabing Badaboom which basically stands for something something accomplished. It's mostly used in "Party" situations.

A close synonym in slang is "Damn Straight"

Adrien: tonight we are gonna party good!

Kamal: Dilly-ding Dilly-dong !

Dilly-ding Dilly-dong by Kamelo1991 May 25, 2016

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dilly-doo

an item in which the name or function is unbeknownst to (or has been forgotten by) the person uttering the term

“I twisted the dilly-doo until the thingy lined up with the whosie-whatsit and wouldn’t ya know it. The dingus got all gashnitzed and gashnizzled and the jobby-joo went wizz-bang out the back. Please forgive me if I’m getting too technical for you. It’s just that I’ve been workin’ in the doojigger biz since I was knee-high to a whatchamacallit and I rarely interact with you civilians.”

dilly-doo by goose_on_a_roof October 14, 2020

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dilly ditching

The act of disposing of ones recreational sex toy, particularly a dildo, in a public space. Especially a residential area.

“She went Dilly Ditching because her toy no longer pleased her and she wanted a new one.”

dilly ditching by SkFredyyP November 2, 2020

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Chick-A-Dilly

Yummy chicken from south Arkansas that will make your ass and titties get bigger than a mug.

I need some Chick-A-Dilly quick because my ass is way too small and my titties ain’t big and a bitch is hongry.

Chick-A-Dilly by Mag-Hoe-Lian July 21, 2018

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