A cross between Accidental Innuendo and Unusual Euphemism. This trope occurs when "language drift" -- natural changes in the common vocabulary -- causes a word or phrase originally intended as wholly innocuous to be potentially taken as startling, confusing or just plain funny in a different time or place. Usually relates to sexual euphemisms, but can also involve other sensitive concepts. Political correctness sometimes comes into play. Compare Values Dissonance. Get Thee to a Nunnery is the inverse. Examples of Have a Gay Old Time include: