that's it. Just Yay!
You know what "yay!" means, right?
No. But I'm guessing that it probably has some connotation with "illicit substances."
Well, there's that, but I was thinking more of the regular connotation, of it being something you say when a good, fun thing is about to happen - neither one really really applies to a new Ringo Starr album coming out, as far as I can tell.