There were a few things that, in rehearsal, any one of us might try. [John] Hughes would go, "I like that," to me spitting up in the air and catching it in my mouth. It was just something I did in a rehearsal and Molly [ Ringwald] went, "Ewww." And John went, "Can you do that again?" And I went all day long, and he was like, "Okay, let's do that."