effinbirds, 
This mug helps warn other people not to open any conversational pandora’s boxes while also helping deliver refreshing beverages to the holder. Sounds like a win-win if you ask me. Visit https://www.effinbirds.com/collections/motherfuck-you-do-not-want-to-hear-my-actual-opinion to choose from this collection of posters, apparel, mugs and other cool merch.