Ah, lol, okay. Sounded vaguely familiar. I even googled it, and that explains why I came up empty.

Maybe I should go to bed.

Ok, this is a shot in the dark, but... When I hear "and a one, and a two" I'm reminded of watching "The Lawrence Welk Show" with my grandparents. You are probably way too young to know who/what that is, so I included the relevant bit from his "wiki" article (he was a famous band leader). I have to say, though, I found his whole story interesting (from a sentimental pov). Anyway, hope this helps solve why that phrase sounds familiar.

Much of the show's appeal was Welk himself. His unusual accent appealed to the audience. While Welk's English was passable, he never did grasp the English "idiom" completely and was thus famous for his "Welk-isms," such as "George, I want to see you when you have a minute, right now" and "Now for my accordion solo; Myron, will you join me?" His TV show was recorded as if it were a live performance, and it was sometimes quite free-wheeling. Another famous "Welk-ism" was his trademark count-off, "A one and a two . . . ," which was immortalized on his California automobile license plate that read "A1ANA2." This plate is visible on the front of a Model A Ford in one of the shows from 1980.

That doesn't ring any bells (probably not surprising; I'm German, and I'm not even sure we even had it here?) but thank you for the detailed description. XD

Oh, btw, you should totally do Secret Santa this year. ;)

I did, I did. XD

Yay!!! I think there were some suitable prompts in there to avoid taking you down rabbit holes you have no interest in! :-)