(Scene from Manhattan 2x14)
David: So Rumplestiltskin is Henry's grandfather?
Mary Margaret: Apparently.
David: But I'm his grandfather.
Mary Margaret: You can have more than one.
David: (he sighs) So his... step-grandmother is Regina, the evil queen.
Mary Margaret: Actually, his step-great-grandmother. And she's also his adoptive mother.
David: (he sighs again) It's a good thing we don't have Thanksgiving in our land, 'cause that dinner would suck.
Mary Margaret: Or... Maybe this will mellow everyone out.