Wonder Woman: Bruce, you didn't give him a gift certificate... Batman: (indignant)No... Cash.
A Gallows Humor moment in the original, Batman genetically engineered a new flower, a rose he called The Krypton, stating he's sure no one else would give Superman the same gift. When Jason sees Superman trapped by the flower-like Black Mercy, he asks Bats if he kept the receipt.
In the original:
Wonder Woman: Let's get inside before you two freeze. Robin(pointing out her outfit): Before us two freeze? Dressed like that? Batman: Think clean thoughts, chum.