Duh-duh-duh-duh

Me: Gawd, I have the weirdest song in my head. Remember in the early eighties, or maybe it was the late seventies, there was that disco version of Beethoven's 5th Symphony?

Ray: Yeah, it's "A Fifth of Beethoven."

Me: Oh! -- A fifth of Beethoven, like a fifth of vodka? I get it!