Check these expressions related to blue: - Where is she? She disappeared out of the blue. - I wash my car once in a blue moon, which isn't ideal. - I asked them to feed the cats till I was blue in the face and in the end they did it. - Those kids are always up to something in class, they get away with blue murder. - I am feeling a bit blue as it's winter now. - I am stuck between the devil and the deep blue sea. How can I get out of this fix? - I am off to the Wild Blue Yonder next week, I can't wait. Enjoy your weekend!