"hard ears" means: A Caribbean English expression describing a refusal to listen, obey, or take advice — the quality of being willfully deaf to instruction or.... This is a fairly neutral word with no inherent risk attached. There is no real cause for parental concern; it is descriptive vocabulary rather than something dangerous. If your child uses it, context will usually make the meaning clear. A brief, curious question about where they heard it is generally enough to know whether to follow up.