Says Barack Obama:
"That's an old 60s expression."
Yeah, it is:
ADDED: You can debate about what ya-yas are. (Everyone who's read the David Sedaris book "Naked" should know Greeks use it to refer to grandma.) But in rock and roll history, there's something that pre-dates the Rolling Stones album. It's Lee Dorsey's song "Ya Ya" ("Oh, well, I'm sitting here la la, waiting for my ya ya"). I think it's just pure serendipity that Lee Dorsey also has this — a song called "Yes We Can," with surprisingly Obama-appropriate lyrics.
IN THE COMMENTS: Kirk Parker asks:
Do we also get to Kick Out The Jams?If you do, please do it this way — not this way. And it's NSFW to do it this way or this way.