I have gone out in my boots是什么意思＼

我已经脱掉我的靴子了 原文：Bob and Jim once worked in the same factory. One day, Bob lent him ten dollars, but then Jim left his work and went to work in another town without giving back the money.
Bob didn’t see Jim for a year. And at that time he knew another friend that Jim was in another town and staying at a hotel（旅馆）. So he went there to see him late in the evening.
When he got to Jim’s room, he saw his shoes near the door. “Well, he must be in,” he thought, and knock at the door. There was no answer. He knocked again, and said, “I know you are in, Jim. Your shoes are out here.”
“I’ve gone out in my boots（靴子）,” answered Jim. 翻译：Bob和Jim曾经在同一间工厂里工作.有一天,Bob借了10美元给Jim,但之后Jim没有把钱还给他就辞职了并去了另一个城市工作.Bob一年没有见过Jim了.那时候他通过另外一个朋友得知Jim在另外一个城市的某个旅馆里.于是他深夜去那里见他.当他到了Jim的房间,他看见他的鞋子在门口边.他想：“恩,他肯定在里面”,然后敲他的门.没有人应答.他再敲了一次门,然后说“我知道你在里面,Jim.你的鞋子在外面.”
“我已经脱掉我的靴子了” Jim回答道.