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A 300 ml ceramic mug that transforms from a plain black or white base into a detailed Stormtrooper design when hot liquid is poured in, revealing the iconic Star Wars armor in vivid color.

Discover the cheeky Firebox Up Yours 'Prank' Mug—crafted from durable ceramic, featuring a bold design and measuring 8 x 8 x 9.5 cm. Perfect for humor-loving coffee or tea enthusiasts looking to brighten their day with its playful message.