Be naughty is a phrase that can have different interpretations depending on the context. It could mean being mischievous, impish, or playful. Some synonyms for this expression include being cheeky, naughty, sassy, misbehaving, or even rebellious. It can represent a range of behaviours from harmless jokes to more disruptive actions. With children, being naughty could mean engaging in harmless pranks or playful behaviour. However, for adults, it may refer to breaking societal boundaries or norms, which can have consequences. Regardless of the context, being naughty is often associated with breaking rules or acting outside of the norm to some extent.