How did Lex Luthor hide his money laundering from superman? He used a krypton-currency.

For people with a gluten allergy, it's kind of like kryptonite, except Superman didn't find a way to mention it in every conversation.

"It's a bird! It's a plane! It's Superman!" "Nope." "A spider? An aardvark?" "Wrong. It's a horse." "Wow. You can't draw for shit."

If Batman gets to use a piece of Kryptonite against Superman, Superman should get to use a piece of Batman's parents. Fair is fair.