Drinky means: An informal, childish diminutive of 'drink,' typically used when speaking to young children or mimicking child-directed speech. Adults also use it self-consciously for comic effect, especially when. There is no real cause for parental concern; it is descriptive vocabulary rather than risky behaviour. This is a food-related word and harmless in itself. If your teen uses it, context will usually make the intent clear. A short, curious question about where they heard it is usually all that is needed to know whether to follow up.