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i need this mug! when cool it is all black and reads "I solemnly swear that I am up to no good" and then when filled with hot liquid turns white and reads "mischief managed".
"I solemnly swear that I am up to no good" mug changes to "mischief managed" when hot... So cool!
DIY Harry Potter mug.
Harry Potter Coffee Mug! I love this! #MaraudersMap #CoffeCup #HarryPotter #Harry #Potter
Mischief managed. NEED IT
Mischief managed! ;) (WANT!)
Battery image appears when you pour in hot liquid, levels go down as your hot drink goes down. Maybe...coolest coffee mug ever.
Coffee Mug Harry Potter Inspired Mug Muggle by JustABrushAndPaint, $8.00
This is awesome!!!