I always say knock, knock before I start jogging.... emotions exercising games seeing sports Please Rate Vote 1 Vote 2 Vote 3 Vote 4 Vote 5 Today's featured daily humor:I always say knock, knock before I start jogging. It's sort of a running joke.Click for another laugh! Previous article: I've made it a habit to not to...... Prev Next article: What do you call someone who takes care of chickens?... Next