fooling around 鬼混；闲逛；游手好闲；胡闹

【例句】
Stop fooling around and get down to business!
别再鬼混了，开始认真工作吧！

He spends so much tune fooling around that he never accomplishes anything.
他游手好闲浪费了这么多时间，永远也成就不了什么事。