The phrase "sit on one butt" implies being physically inactive, lazy or stuck in one place. Its antonyms include words like active, energetic, productive, busy, and mobile. These words suggest movement, activity, and physical engagement with the surrounding environment. Sitting on one butt also connotes a lack of motivation, so antonyms such as driven, ambitious, inspired, and enthusiastic would be fitting to convey a sense of purpose and determination. Conversely, the phrase suggests a sense of contentment, so antonyms like unsettled, restless, and agitated would illustrate a desire for change, novelty, and growth. In conclusion, the antonyms for "sit on one butt" describe a variety of qualities that promote physical and mental activity, productivity, and personal growth.