The phrase "It's a ding ding " is used when experiencing a big win in Casino games, a win 100x or more is normally required for it to be a Ding Ding . Higher wins 300x or more are often referred to as a SUPER MEGA DING DING The phrase is said whilst holding one foot with both hands, then raising it in the air as you say "ding ding"Legend has it that a Swedish man called Sir Kim from Halmstad created the phrase when getting over 100x on Starburst!