The phrase "great feeling" is an idiomatic expression that means a very positive emotion or sensation. It can refer to any experience that brings happiness, satisfaction, contentment, joy, excitement, or euphoria. The term encompasses a wide range of emotions and experiences, from the simple pleasure of enjoying something delicious to the profound sense of fulfillment that comes with achieving a long-term goal. When someone says they have a "great feeling," it usually indicates that they are experiencing something very positive and enjoyable.