The Joker still just doesn't know what to make of this strange person. Bats, he gets him. Henchmen. He gets them. God, even Harley makes sense. But this? He finds himself alternately amused and irritated in rapid succession.
"Exactly how do they have more fun?" He crosses his arms, clearly waiting for an explanation.
He pokes him in the nose lightly, smiling. "Yes, Fwooosh. That's been established."
Okay, I have to pass out now. I typed smailing instead of smiling, and irradiated instead of irritated. Is bedtime.