There are many speculations about what Adidas really means. Some people say it means " All day I dream about Sports" While others say it means " All day I dream about sex." But, according to the founder of Adidas Adolph Dassler it is just the first two letters of his first name and the first two letters of his last name.
ADIDAS stands for many things, including All Day I Dream About Sports, All Day I Dream About Soccer, All Day I Dream About Scoring, or All Day I Dream About Shoes. You can find more information here: http://www.abbreviations.com/ADIDAS