Quote from Jerry in The Letter
Nina: Elaine? Jerry: Yeah. Nina: [rolling eyes] This person does not believe in telephones, does she? Jerry: She likes the pop-in. I've told her how I hate the pop-in. [pointing to George] He likes the pop-in, too. George: I just popped in now. I'm a big pop-in guy. Jerry: Yeah. George: How 'bout Kramer. Jerry: Oh, huge pop-in guy!