Kink meme gods, I beg you to deliver, I've been sitting on this prompt for over a week now.

Matt's mother bailed when he was still a baby and so he doesn't remember her. He never had a mother. And then he met Mrs. Nelson.

Kink meme, please give me a fic in which Matt calls Mrs. Nelson "mum". I don't care why, it might be a joke, it might be a slip of tongue, Matt might be drugged, Matt might be dying. Just make him call Foggy's mother "mum".