The term SO NICE! can be broken down into three parts: AHH, OOH, and OOOH. AHH is an expression of surprise or joy, usually used to express excitement or admiration. OOH is an expression of pleasure or delight, often used to express admiration or approval. OOOH is an expression of awe or amazement, usually used to express admiration or appreciation. All three expressions are used to express positive emotions and can be used to show appreciation for something or someone.