The Fantasticks is a stage play about two sets of parents who are next-door neighbors. One set of parents has a son, the other has a daughter. They want their offspring to fall in love, marry, and live happily ever after, so they build a wall to keep them apart.
One could perhaps imagine a rewrite of the play in which the parents also employ chastity belts to keep the young people apart.
As a side note, I attended a performance of the play at its original venue, a tiny 299-seat theatre in lower Manhattan back in 1983 or 1985. It was a bitterly cold winter night in New York City. Lore Noto, the producer (I had thought, up to now, that he was the playwright) was in attendance that night, and answered questions from the audience after the performance.
I’ve also seen the play produced elsewhere.