It is what your penis smells like after you pull out of a vegan. Because she doesn't want your protein injection.

(V.) The action of using pieces of wilted kale as a tongue to lick someone during sex. A high priorities with sexually active vegans.

Kale is slang for money, it's not just cabbage, which is also slang for money, so you can't have your money and spend it too. It's my updated version of the idiom, " you can't have your cake and eat it too".