Magic 8 Ball Pun

Okay, look, you probably didn't get this because you're about as sharp as a butter knife. The joke works by setting up 'Balls' and 'Magic' as two separate things that are in conflict. But the punchline combines them into 'Magic eight Balls,' which is a well-known toy. The humor is just a simple pun on the name of the object. Don't strain yourself trying to figure it out, just pretend to laugh.