What does the phrase 'you little dickens' mean?

Oh, dude, "you little dickens" is like a playful way to call someone mischievous or cheeky. It's not about the size of anyone's, uh, you know, anatomy. It's just a cute, old-fashioned way to tease someone for being a bit of a troublemaker. So, like, don't take it too seriously, just roll with it!