Quote from Kramer in The Frogger
Jerry: So they just gave you this? Kramer: Oh no, no, no. I had to fish around in the evidence room for it. You know, they're all preoccupied, trying to hunt down this new psycho-serial killer, the Lopper. All right, I'll see you. Elaine: Wait a minute. Wait a minute. Who is the Lopper? Kramer: Oh, it's no big deal. It's just some guy who's been running around Riverside park... You know, cutting people's heads off. Jerry: How come I haven't read about this? Kramer: Well, you know, the police, they've been having some internal dissension about the name. Elaine: Really? What're the other titles? Kramer: Uh, Heads-o. The De-nogginizer. Son of Dad. Jerry: Son of Dad? Kramer: Yeah. That was my suggestion. It's sort of a catchall.