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Wacky Races (Wackey Muttley) Morphing Mugs™ Heat-Sensitive Mug MMUG866

Price: $18.99

Do you hear that snickering sound? Sounds so … mischievous.


For fans of the old Wacky Races and the new, this super bright, officially licensed mug features Muttley the dog and his most famous quote, “Heheheheh.”


The exterior of this officially licensed 11oz mug transforms from black as hot liquid is added, revealing the hidden image in full vivid colors.


  • Officially licensed color changing, heat-sensitive ceramic mug
  • Heat-activation reveals hidden image
  • 11oz in size, weighs 1lb
  • Designed and printed in the USA by Trend Setters Ltd. Shipped from USA
  • Authentic Morphing Mugs™ heat-sensitive mug


*While this mug may be used in the dishwasher or microwave, for the longest lasting, highest quality product, we strongly recommend against it.



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