Tell me why this is funny.

A magician wears a crumpled top had. His bow tie is undone and a white hankie, unfolded, pours out of his coat’s pocket. Three playing cards lay face up. a feather, and a baton are on the ground next to the magician, who has a few days growth of facial hair. As he sticks his arm out, he presents, “And, as you can see, my beautiful assistant has disappeared…months ago…with my brother.”