have your head screwed on (the right way)idiomPart ofrighthave your head screwed on (the right way)have your head screwed on (the right way) — idiomidiom1. To be a sensible and practical person.1.idiomDefinitionTo be a sensible and practical person.ExampleMaya has her head screwed on; she always makes smart decisions.Does Brian have his head screwed on? He invested all his savings wisely.