Dad's tank if full of high octane bad jokes! At Crazy Dog T shirts, we’ve combined what everyone loves in a mug: a high-quality product and funny jokes. Our mugs will help you show off your unique sense of humor and your hilarious interests, while holding your cup of tea at the same time! We only use the best! The commercial grade, high quality ceramic and plasticol ink let everyone look great sipping hot cocoa at home or chugging coffee at the office . Rated for 5+ years. Waterproof, UV resistant and will not fade. Dishwasher and microwave safe. Our mugs are standard size with glossy white ceramic base and plasticol ink print. They're great geek gifts ideas for a nerd with a sarcastic sense of humor. Your New Favorite Mug!