In Offspring, Fred tells Angel about a Pylean word which reminds her of his and Cordelia’s relationship:
Fred: “Kyrumption. It’s the one nice word I remember from the Pylean hell dimension.”
Angel: “What’s it mean?”
Fred: “It’s when two great heroes meet on the field of battle and recognize their mutual fate. It’s also a kind of grog made out of the ox dung but that’s archaic.”
In Waiting in the Wings, Lorne and Angel have the following conversation:
Lorne: “Sorry, strudel. It’s not just when you’re singing. We got a little term back in Pylea. Kyrumption?”
Angel: “I know it.”
Lorne: “Okay. When two great heroes come together…”
Angel: “There will be no coming together, okay? Everything we’ve been through together and all anybody wants to talk about is…”
Lorne: “Can’t fight Kyrumption, cinnamon buns. It’s fate. It’s the stars. Kyrumption is…”
