The phrase "casus belli" used by both Elaine and Jerry during the episode translates as "risk of war".

Jerry: I am special; my mother was right.

Monica: Is that the test?
Elaine: Oh, this ... um ... yeah ... here you go.
Monica: Thanks. I hope you do a lot better this time.

Elaine: Why do you keep watching?
Jerry: I don't know, I'm obsessed with it. It's like a spider in the toilet struggling for survival. And even though you know he's not gonna make it you, you kinda root for him for a second.
Elaine: Then you flush!
Jerry: Well, it's a spider.

Kramer: Anyway, it's been two years. I mean, isn't there a statue of limitations on that?
Jerry: Statute!
Kramer: What?
Jerry: Statute of limitations, it's not a statue!
Kramer: No, it's statue!
Jerry: Fine, it's a sculpture of limitations!
Kramer: Elaine. Elaine! Now you're smart. Is it statute or statue of limitations?
Elaine: Statute.
Kramer: Well, I really think you're wrong.

Kramer is wearing the same jacket that George compliments him on in "The Parking Garage".