Because you're a people person: salute all the lovely people who attempt to interact with you with a friendly middle finger. Or this totally rude (but totally funny) mug. Our vintage reproduction enamel mugs are made from a thick enamel-coated steel. They are heavy (for enamel mugs--still lighter than ceramic), smooth, wonderful to drink from, and crazy sturdy. Dishwasher safe. These are steel under enamel. So please don't use them in the microwave.