"leftugee" means: One who leaves a liberal blue state to live in a conservative red state, (often) doing so in favour of fewer regulations and lower taxes.. 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.