gag line

1. If you can take a standard gag or comedy line and add some element that the folks in the audience will recognize and associate with, you'll get bigger laughs than the line deserves.
   如果你使用一个标准的把戏，或喜剧公式，添加一些元素，能让在观众中的乡亲认同，你会获得到比原先预估更大的笑声。

noun

1. the point of a joke or humorous story

   Synonym:    punch linelaugh linetag line