1. (n) A liquid recepticle, custom-order printed with a definition from the online Urban Dictionary
; 2. (n) An effective revenue-raising tactic for the aforementioned website, preferential to pleas for donations, or excessive site-advertising, also known as Page Whoring
Sally: "Hi there Doug, I like your mug - what does it say?"
Doug: "It's an Urban Dictionary Mug. I was feeling rebellious, so I ordered this mug with the definition of 'Mug' on it - isn't that hilarious?"
Sally: "Lose your virginity, Doug."
Doug: "Your mum already handled it, Sally!"