Here are some ways it can be used:
* "Stop that monkeyshine and sit down for dinner!" (meaning: Stop being silly and behave yourself.)
* "He was up to all sorts of monkeyshine at the party." (meaning: He was acting silly and causing trouble.)
* "The children were full of monkeyshine after a sugar rush." (meaning: They were being very playful and energetic.)
The word "monkeyshine" comes from the playful and often unpredictable behavior of monkeys.