Do regular coffee mugs just seem too weak to you? Do you like to show your comic side? One of these Tumbleweed Classic Word Coffee Mugs will perk you up. These oversized 20 ounce coffee mugs are lead free, and microwave, food and dishwasher safe. Each mug features a witty sentiment, making it the perfect gift for friends, co-workers and family. Glaze color may vary. This coffee mug reads: Grandma.