Lorelai: So, alumna is a girl graduate.
Rory: Right.
Lorelai: And alumnus is a man.
Rory: Singular.
Lorelai: So an unmarried man?
Rory: No, not not-married. He can be married or single, all alumnus means is one man singular as opposed to many men plural.
Lorelai: And plural is alumni.
Rory: Right, and that can be girls and guys.
Lorelai: Kinky!
Rory: No, not kinky, just what it is.
Lorelai: Oh, you're no fun when you're nervous.
Rory: Oh yes, because you and I usually have so much fun with Latin.