An example of this is the term groovy which is a relic of 1960's and 70's American hippy slang. Nevertheless, for a slang term to become a slang term, people must use it, at some point in time, as a way to flout standard language.
Cycling is a highly effective form of exercise. It requires a lot of energy, builds lean muscle mass, and improves your strength, cardio capacity and endurance. However, cycling won't specifically burn belly fat. It will certainly help to reduce your overall body fat, but since spot reduction is a myth, you will have to be patient for your belly fat to burn off with the rest of your fat.
Decreases Body Fat. Cycling burns a lot of calories, up to 500 in 30 minutes of riding. This will aid in weight loss by potentially creating a calorie deficit. This means if you consume 2,500 calories per day, and burn 500, than that will leave only 2,000 for your body to use for day-to-day function.