One of these expressions is " monkeyshines, " meaning " tricks or foolish acts."

其中一个表达monkeyshines，“恶作剧或愚蠢的行为。

What? You think I'm too old to make monkeyshines at a picture show?

什么 你觉得我到连取笑烂片的力气都没有了吗？

So, when a teacher says to a group of students " Stop those monkeyshines right now! , " you know that the boys and girls are playing instead of studying.

所，师跟一群学生说“Stop those monkeyshines right now! ”你就会知道孩子们在玩而不学习。