He used a krypton-currency.
You're a little rougher than I'm used to, but I'll grit and bear it. I'm sorry, that joke was a little rough ;D
Mint conditioner.
To hide the fact that their food has no flavor.
A: Hide it in an accordion case.
Because krypton gas is odourless.
He was trying to save Krypton
Man.
P*** Even Superman can't hold it.