It is science-fictionally proven that unicorn flatulence contains the highest legal concentration of caffeine currently available. BigMouth Inc. ?Powered by Unicorn Farts? Coffee Mug is a great choice when you are looking for an amusing mug that is going to satisfy your coffee craving. Made of ceramic and having a capacity of 20 oz, this novelty coffee mug is perfect for the home or the office. Use this mug and grab life by the horn. It is also a great gift for anyone who loves coffee and interesting mugs. Easy to clean, simply handwash the coffee mug after you are done with your beverage.