Skull and Crossbones 2.5oz Cordial Shot Glass | 12 PackThe Skull and Crossbones say beware! The symbol has been used throughout history as a warning to mark gravesites or poisonous liquids. The design is most famously used on the Jolly Roger to represent Piracy. The Rolf Glass Skull and Crossbones glassware collection might warn people of a dangerous potion or you can fly them on your dinner table if you fancy yourself a pirate. Dishwasher safe US made glassware Designed and sand engraved in Pennsylvania