When someone calls you a "monkeyshine" what does it really mean?

I first heard the term directed at me by my uncle years ago who raised me. I interpreted it as someone who gets in trouble, or someone who is mischievous. So, I started calling my one cat “monkeyshine”, it just feels appropriate, but I could be completely wrong. When I look on line, I can’t find a definition that resembles what I have been led to believe, then again, I haven’t looked real hard. So, I thought I would see if any one else knows of, or heard this term before.