This Wacky Races BirthdayÂ Day card reads on the front "How Old? Hee! Hee! Hee! Hee! Hee!" Included on the cover is an image of Muttley. There is space on the inside for your own personal message.Dimensions - 9" X 6"License -Â Warner Bros Danilo is the leading publisher of licensed calendars, diaries, greeting cards, gift wrap and gift bags in the UK. We are a run company thatâ€™s been operating for more than 40 years. Our licenses range from pre-school to adult. All the paper we use is responsibly resourced and we only work with suppliers and manufacturers that meet our stringent ethical requirements.