I solemnly swear I am up to no good :: Mischief Managed // Harry Potter mug! - What would be really cool is if "Mischief Managed" were at the bottom of the mug, so that you'd see it when you finish your bev.
Harry Potter Mug Color Change Coffee Mug Mischief Managed Magic Ceramic Cup Gift
Harry Potter Coffee Mug. It starts out all black with "I solemnly swear." and when you fill it with hot liquid, it turns white and says "mischief managed.
Buy three fan-favorite Harry Potter mugs and save! This mug set is perfect for any muggle or a wizard and consist of our exclusive Mischief Managed transforming mug (add hot water and the text changes from "I Solemnly Swear the I am up to No Good" to Mischief Managed"), the Hedwig scultped mug, and the cauldron sculpted soup mug (complete with spoon and lid). This magical set will have you brewing up your favorite magical potions, concoctions, and elixirs, and when you're d...