Do you know what 'kys' means?If you read the acronym KYS – or kys, as it’s usually written online – you might think it’s harmless. Some TikTok users have even suggested it means “keep your smile”. But there’s a more sinister meaning behind those three letters that parents should be aware of because it could highlight cyberbullying.According to Gabb’s guide to teen slang, the acronym stands for “kill yourself”.It’s not unheard of for people to receive ‘KYS’, ‘kys’ or even ‘keys’ comments on social media platforms, whether publicly or via personal message. But while some might mean it in a jokey way, the meaning can land differently from person to person.