Toronto. The “double your pleasure, double your fun” jingle may have applied to Wrigley’s Double Mint gum but it certainly did not apply to accidental photographic double exposures.
In fact, camera makers went out of their way to tout their designs as “double exposure proof”.
Unfortunately, we all succumb to those momentary periods of stupidity – even Leica users. Usually my mistake was rewinding a fully or partially exposed roll of film then forgetting to mark it. It would then be used some weeks or months later in the camera and re-exposed to totally different scenes. Bah!