Jests, like sweetmeats, are often sour sauce.

A joke may seem pleasant at first, just as a sweetmeat—an older word for a sweet or confection—does, yet leave an unpleasant aftertaste. Humour can wound, embarrass, or provoke resentment when its target does not share the amusement.

The saying counsels restraint in teasing and mockery, rather than condemning humour in general. What is offered as light entertainment may bring a bitter response or create hostility, especially when the jest is pointed, repeated, or made at another person's expense.

Use it when warning that playful remarks can have sour consequences. It suits reflection on teasing, sarcastic banter, or public joking that may offend, rather than harmless humour willingly shared by everyone involved.