You are completely out of the way

问题描述:

You are completely out of the way
RT
形容人的话显然不能说是偏僻的吧。
会不会是什么俚语的用法呢?
补充一下前后文:
我们约好去同学家玩,因为我没有车,所以要这个朋友搭我一程。然后他跟我说:
you're completely out of the way!haha,it's okay,sure I'll pick you up.
感觉上应该是句开玩笑的话吧,

B不在A要去的途中,A却帮B的忙,上下文如下:
A:Where are you exactly?
B:I'm at the library right now,but could you drop by anyway and give me a lift?(搭便车)
A:You're completely out of the way!Ha ha,it's okay,sure I'll pick you up.(even though it's not where I had planned to go 的含义)