"Thirteen Question Method" (1961)
The funniest and oddest of his sex songs. Set to a Latin beat, it begins with piercing single notes, each like a raised eyebrow, as Chuck lays out his seduction principles: "The 13-question method is the one/To use when you want to go have some fun." Question number eight: "Is it a date?" Question number 12: "When we're by ourselves." That's where the door swings shut. He never gets to question number 13. Use your imagination.