今天给大家介绍：To pull one's leg。To pull one's leg 初看起来好像和中文里的“拉后腿”的意思差不多。但是，千万不要被表面现象所迷惑。To pull one's leg的真正意思是逗别人，开别人玩笑的意思。有时候，有的朋友故意讲一些话来骗我们，后来才发现他是在开玩笑。

例如，一个大学生上了同学的当，事后他说：

"My roommate said this girl had told him she wouldn't mind going out with me. But when I invited her to a movie, I learned he was just pulling my leg."
这个大学生说：“我的同房间同学说，那个女孩愿意和我一起出去玩。可是，当我请她去看电影的时候，我才发现我那同学是逗我，开我的玩笑。”

要是这个大学生聪明一点的话,他当时就可以对他的同学说：

"Hey, stop pulling my leg, will you! I don't believe that girl really said she likes me and would like me to take her out."
这句话的意思是：“喂，你别逗我行不行！我才不信那个女孩真的说了她喜欢我，还要我邀她出去玩。”

stack up
总起来, 加起来 ;(使)排队等候, 使(车辆)阻塞
例句：
Traffic stacked up for kilometers.
车辆排了几公里长。