初一英语阅读理解!求助!前面是问路的一些无关紧要的话,重要的：“Open the door with your foot

初一英语阅读理解!求助!
前面是问路的一些无关紧要的话,重要的：
“Open the door with your foot.”says John.
“With?”says Henry,“Why?”“Well,you won`t come to my house empty-handed,will you?”says John.
翻译：empty-handed
Why does John ask Henry to open the door with his foot?
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