"I don't." And that's all he has to say on the matter. At least, on that part of the matter. He purses his lips and shoots Noodle a look out of the corner of his eyes at her question, puffing up a bit like a bird. "Don't be so lewd. It is not ladylike behavior. And for the record, no, it most certainly is not. It is none of your business, to be precise."

In other words, Gamzee has dirt on him that he actually doesn't want people to know.