I was goofing around and broke my arm.

在四处闲荡时摔折了胳。

Lew and I started goofing on Alison's friend.

卢开始嘲艾丽森的朋友。

We just goofed around till the train time.

在火车开车前们只是闲荡了一阵。

You'd goof things up good.

你会把事情完全搞糟的。