Which side are you on, son? Pour hot liquid into this officially licenced Full Metal Jacket Morphing Mugs Heat-Sensitive Mug and Private Joker’s helmet appears. The exterior of this officially licenced 11oz mug transforms from black as hot liquid is added, revealing the hidden image in full vivid colours. While this mug may be used in the dishwasher or microwave, for the longest lasting, highest quality product, we strongly recommend against it. PLEASE DO NOT MICROWAVE THIS MUG. HAND WASH ONLY. Due to the need for hot liquid to transform the mug, this mug might not be suitable for young children.
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