The long and short of it is, it's from a beer commercial

You may have seen someone on your social media commenting "Dilly, Dilly!" Whenever something like that happens, I get on the case.

I found out that "Dilly! Dilly!" is from a Bud Light commercial. It's a nonsensical phrase that basically means the same thing as "Here, Here!", or even a more friendly version of "Hell yeah!"

Of all of the things out there we could be talking or worrying about, I think this nonsense phrase is just what we need at this time. Here's the commercial for you to check out.